Yes, you can indeed use the mouse to click the buttons or move sliders in trainers when you’re Pro. It certainly helps with not having to remember the keyboard hotkeys, especially when there are a lot of cheats in the trainer (ie, the Borderlands 3 trainer has 49 options 
).
You can also use the remote app, which you can download for free and use as long as you’re Pro, which you are. If you’re unable to download the remote app, you can also use it through this link: https://remote.wemod.com/.
We have a video of the Pro features here if you want to check that out: https://support.wemod.com/article/26-what-is-pro-membership.
I know I said this in another thread, but thank you again for being Pro. 
