Web protection prevents from sending emails with gmail

My version is AVG AntiVirus Free 17.2.3008
Here is a screenshot:
User-added image

Hi Guillaume,

We apologize for the inconvenience caused. Could you tell us if you have the latest version of AVG Protection installed on your computer. Also please attach a screenshot http://avgread.me/1aZxsAV of the error message that you get while trying to access your Gmail from your Firefox Web Browser.

Thank you.

Hi,
since today I can't send emails using gmail from Firefox web browser.
The only solution I found is to deactivate completely AVG web and email protection component.
I tried many different configurations while keeping the component up but none solve the problem.
Please, anyone successfully solved this?

Hi Guillaume
We regret to hear about the inconvenience caused. We suggest you to uninstall and re-install AVG Anti-Virus free to fix the issue.
Please use the link to show how to uninstall AVG from your computer : http://avgread.me/1DEtNP0
After reboot, Open C drive and look for folder "Program files (x86)" , you can see "AVG" folder in in Program files (x86), please delete the AVG folder.
Please click on the link to show how to install AVG Anti-Virus free : http://avgclick.me/InstallFree
Please let us know if you face the same issue after re-install. Thank you

My version is AVG AntiVirus Free 17.2.3008
Here is a screenshot:
User-added image

For your info, just in case that you are unaware, you can post the screenshot here in your topic. Click on 'Answer' & then click on the 'Image' [mountain symbol] & follow the instructions. 
AVG Guru

Hi Guillaume,

We apologize for the inconvenience caused. Could you tell us if you have the latest version of AVG Protection installed on your computer. Also please attach a screenshot http://avgread.me/1aZxsAV of the error message that you get while trying to access your Gmail from your Firefox Web Browser.

Thank you.