Tabs meaning the chrome-like article selection? I use it all the time, FWIW.

Have noticed this lately, and it absolutely sucks. I’m not a pirate, I just want to be able to purchase books (like I used to physically) and read them at my convenience offline or on any device I like. I’ve been sticking with services where I can do this currently or avoided purchasing those books when I can’t.

Last one I bought (it’s been a year and a half or so) I was able to use Calibre to decrypt it. I do believe the store page has to have a flag saying it’s a digital editions download. I don’t think all offer that IIRC