Just means it mobile ready for the app on the play store that links to the trainer manager. You can still use it just like you always could without them.
All trainers now require .NET core desktop runtime 3.1 (both x86 and x64), to ensure comparability with what ever OS you are running. Links are below.
Have both these .NET CORE and FRAMEWORK Installed from Microsoft.
.NET Core 3.1 Desktop Runtime x86 Link
.NET Core 3.1 Desktop Runtime x64 Link
.NET Core Current Runtime x86 Link
.NET Core Current Runtime x64 Link
.NET Framework (get latest) Link
(Both x86 and x64 of the .Net Core MUST be installed)
Reboot PC when done.
.Net framework will sometimes be installed with Windows updates so you may have had part of them already installed.
I don't believe he meant to install all of them. Since he doesn't know what OS you have (32 bit or 64 bit) He posted all the links for you to choose from and you are supposed to just download the ones that match your OS version.
clean any old trainer data out first.
Please delete the trainer, custom keys, debug folder where the trainer resides and all files in
Learn how to make your own Trainer Cleaner for the above paths here.
Reboot PC to clear excess memory, get a fresh copy of latest trainer and extract it. Run trainer as admin, read the instructions and try again. At times, a new game may be needed to resolve failed options if the data in your save file was altered. Use on a new game and test the option. If it now works, quit to main menu and load your save and try it again. May also need to run the game without the trainer first and play a bit so the save file gets updated to use possible new values. This typically will resolve the issue.
This cleaner is also part of the new Cheat Happens Trainer Manager 2.0, it is found in the settings and has an easy to use one button click feature.