Sorry to hear about this!
Would you have a screenshot you could upload and link to on a site such as Imgur?
This thread was added on May 28, 2020, with posts from Sarno, Hackaloken.
There is a hotkey that disables the tooltips of items on the ground, which is set to Z by default. It sounds like it must have been enabled by mistake since you aren’t able to pick up any items. Sorry about that!