Arc Cant Transfer rented books on Kobo Arc.

Hey guys,

Im sorry it may, or may not, have been asked before, but, i have a big problem.

I bought my mom a Kobo Arc for Xmas and its working fine. The only problem is that i cant seem to be able to transfer books i rent from local library into the tablet.

I did download Adobe Digital Editions and all, but when its time to drag and drop, Kobo says that their application isnt KOBO ARC ready so im lost...

Could anyone please help with that... Im not tech savvy at all and it would make my life easier...

Thanks