Hi Jiří,
We will help you in this.
Defragging is only recommended if you have an HDD (Hard Disk Drive). If you have a SSD (Solid State Drive), defragging is not necessary or beneficial. AVG TuneUp automatically detects your drive type and only offers to defrag HDDs.
To check if Disk defragging is recommended, go to All functions ▸ Defragment or optimize disks.
Click on the below link to know more about the AVG TuneUp :
https://support.avg.com/SupportArticleView?urlname=AVG-TuneUp-FAQ
Hello Jiri. Thank you very much for taking the time to write and I apologize for my delayed response.
My name is Shawn and I am writing to you on behalf of the AVG Senior Support team. I will help you.
Specific to your concern, the TRIM feature of AVG TuneUp's Defrag/Optimization for SSD, is not an available feature in version 20.1.
I shared your feedback with our development team, and the incorrect reference of optimizing your SSD, will be revised in a future product update.
I trust this explanation helps clarify your concern. Regards, Shawn
Look at the picture, its from 20.1 version. SSD optimize in Defragment option.
Next picture is in czech from version 20.1.
How we made optimazation of disk: classical HDD we defragment, if u have SSD, we process TRIM function.
So u dont have TRIM function, but offered this function. GREAT 
Yes, i know, im not stupid
After last update was AVG present TRIM function for SSD disk ant thats why is now 64b version of Tune Up.
And in "Defragment or optimize disk" was written: Optimize your hard disk drives (HDDs) or solid state drives (SSDs) for increased perfomance and storage efficiency.
In actual 64b verison Tune Up i dont see my SDD disk (C label), just HDD (label D).
I was uninstal Tune Up, install again and nothing.
I have actual version of Win 10 (64b).
Thankx for help
Thank you for writing back to us, Jiří.
We'd like to inform you that in the recent update of AVG TuneUp (20.1 version), several changes were made. One of which is the Disk defrag feature not being offered for SSDs anymore.
We request you to elaborate your query regarding the TRIM you're referring to, as we're uncertain. Thank you for understanding. Keep us updated.
We regret the inconvenience caused, Jiří.
We've forwarded your concern to our higher level support. They'll review your case and will write back to you as soon as possible.
Meanwhile, your patience is appreciated.
Hello Jiri. Thank you very much for taking the time to write and I apologize for my delayed response.
My name is Shawn and I am writing to you on behalf of the AVG Senior Support team. I will help you.
Specific to your concern, the TRIM feature of AVG TuneUp's Defrag/Optimization for SSD, is not an available feature in version 20.1.
I shared your feedback with our development team, and the incorrect reference of optimizing your SSD, will be revised in a future product update.
I trust this explanation helps clarify your concern. Regards, Shawn
Hi Jiří,
We will help you in this.
Defragging is only recommended if you have an HDD (Hard Disk Drive). If you have a SSD (Solid State Drive), defragging is not necessary or beneficial. AVG TuneUp automatically detects your drive type and only offers to defrag HDDs.
To check if Disk defragging is recommended, go to All functions ▸ Defragment or optimize disks.
Click on the below link to know more about the AVG TuneUp :
https://support.avg.com/SupportArticleView?urlname=AVG-TuneUp-FAQ