I received the same notification on my M1 Mac Mini. After a bit of digging I found this page:
https://helpx.adobe.com/uk/support/d...-editions.html
There are further links to an organisation called Wipro/ByteBooks - it says no change to the app but there will have to be to use Apple silicon.
I use the product when borrowing library books in the UK either through Overdrive or BorrowBox. I hope they will have/are putting some pressure on one of the above organisations to produce an Apple silicon version.
Obviously Adobe are washing their hands of a product which, although a standard, makes no money for them.