Hello everyone! A few days ago I made a decision to try out an Apple product - I bought a 2018 iPad with 32gb of memory. The main reason I wanted a tablet is for reading some books as well as having some options for doing multimedia activities when I'm out of my house. Anyway, the problem I encountered is that after uploading some PDF books to my iPad from my PC I can't search them in either iBooks app, nor Adobe Reader (free version), although they're searchable on my PC. For example, in iBooks app, I can actually highlight all words in those files, but when I do a search it doesn't do (return) anything. In contrast, when I share those PDF's to Adobe Reader I cannot highlight the words for copying, for example (although when I want to make write a comment or highlight text in yellow it is possible to select exact words and letters). My question is - what is the problem and what can I do to solve it? Thanks!