Poss. corrupted AVG Trial, Tech Support not helpful, is re-install of Trial possible OR worthwhile?

Hello Robin,

We are sorry for the inconvenience caused.
On Safe mode you can only access the AVG program but you couldn't scan or Update it.
We request you to completely reinstall AVG Internet Security trial version using our AVG remover tool. Please follow the below mentioned instructions:
1) To download AVG remover tool, please click on this link: http://aa-download.avg.com/filedir/util/AVG_Remover.exe
2) Run the downloaded file and follow the onscreen instructions.
3) Restart your PC when the restart option is displayed on the remover tool screen.
NOTE: Once you have logged into your PC after the restart, please go to C: drive and delete the "AVG REMOVER" folder manually.

I was online yesterday, and got a number of AVG pop-up ads, as I have, since I began my trial of one of the advanced suites.

At some point, I got a pop-up w/ the AVG logo saying that I had 2 firewalls running, and to click the message to resolve it.
I did not, I went to check on the issue in Control Panel, which previously showed that AVG's firewall was active, but then showed a warning of no protection.

I went to the hidden icon notification area, which typically shows active programs, and even though I had AVG open, its logo was missing.
Using the AVG controls, I attempted to update the program, only to realize that somehow all of the buttons had become unresponsive.

Throughout all of this, I got a series of AVG pop-up ads, a distraction, amid the chaos.

I went into Safe Mode and ran AVG from there, it found nothing.
I tried to double-check with an online scanners, but something would not let any of the ones that I tried to employ complete their downloads, in Safe or Standard Mode.

I could not update AVG in Safe Mode.
In Standard Mode, AVG appears to update, but the searches still find nothing, and yet the online scanners still cannot load.
I feel certain that either my system is infected, my version of AVG is corrupted, or both.

An older relative had a tech in the house earlier this week, who, for some reason got her modem and router password to connect her new computer to an existing Wi-Fi connection in the house.
When I checked in to see what might be behind his over 3 hour call, I discovered that he had a phone, which was a mobile hot spot attached to her system, while he set it up, and entered her password.
She is a senior citizen, I have no idea why she even called someone from the outside to do this, when family members have done it for her before, but I am curious as to whether anyone knows if there are any vulnerabilities that type of connection -his hot spot enabled phone attached to her system, or, to our network through her system might have caused, AND, how I might go about, first securing my own system, the protecting all of the systems on our network, in case this guy either deliberately, or inadvertently, created a back door to our network.

I'm a newbie on the tech front, but I try to read as many articles as I can, to try to keep up with the good and bad that's emerging.

Please help, if you can.

Thank you. 

Oh, by the way, if anyone from AVG reads this, I just want you to know that, when you advertise something as a free trial, it suggests that you are allowing them to have full access and exposure to whatever program it is, and its full capabilities.
Your technical team tried to SELL, SELL, SELL, telling me that the trial version did not have a number of features available, if I purchased the full version, that, by remote access, they could diagnose my system for free, but that a fix would require a fee.
Their final insult came, by seeming insistence that whatever  caused the security breach was somehow my fault: by running concurrent antivirus programs, which I did not, then accusing me of uninstalling previous security improperly, which according to instructions I had found prior to doing so, I had not.
I just think that's bad form, and I want you at AVG to know that.
Please advertise only what you're offering, if that is not what you have already done, and Tech Support and Sales should be separate areas with separate functions, otherwise you can seem like you're running a sham operation.

Please be informed that the trial version of AVG Antivirus and AVG Internet Security will be valid only for 30 days. After the expiry you couldn't make use of the program and it will ask you to purchase the license.
You can either purchase the license and use as paid version or you can downgrade it to free version.
If you wish to install only AVG Free antivirus please use this link: http://www.avg.com/us-en/avg-antivirus-free to download the installation file.
If you wish to download the trial version of AVG Internet Security which has the Firewall component in it, please use this link: http://files-download.avg.com/inst/mp/AVG_Internet_Security_695.exe
Please feel free to contact us if you need any assistance.

Hello Robin,

We are sorry for the inconvenience caused.
On Safe mode you can only access the AVG program but you couldn't scan or Update it.
We request you to completely reinstall AVG Internet Security trial version using our AVG remover tool. Please follow the below mentioned instructions:
1) To download AVG remover tool, please click on this link: http://aa-download.avg.com/filedir/util/AVG_Remover.exe
2) Run the downloaded file and follow the onscreen instructions.
3) Restart your PC when the restart option is displayed on the remover tool screen.
NOTE: Once you have logged into your PC after the restart, please go to C: drive and delete the "AVG REMOVER" folder manually.