PB Kobo app and PB eReader app

I have PB with the Kobo app and downloaded eReader from App World. I previously had a Kobo account and bought a number of books that I'd like to read on my PB but using the eReader app. Can anyone tell me how to migrate these books to the PB eReader app?

Adoral

You would have to find a way ro remove the drm-coding which would need a program on your computer. Google Calibre and
apprentice
alf for more info. It may be illegal