I set up an Adobe digital account on my iPad. I have borrowed a from my public library but am not allowed to download it to the ereader because I already have an adobe account on the iPad. Any advice?

I have  set up an adboe digital account on my iPad. I have snice purchased an ereadeem which required adobe digital. The ereader is connected to a different computer. I have dowloaded a book from my public library and when I attempted download the book to my eraser, via this same Adobe digital account, Adobe presented a message stating this account can be used on the device on whi hit was established (the iPad).

Is it now necessary to uninstall that account, and if so, now is this done. The plaN would then be to install it oN the other computer.

Thank you.