no ebooks in library of ADE

In the library of ADE no books, which are downloaded from public library,  are available. Even after reinstalling ADEapplication  on my PC, the problem remains. Authorization of my PC and KOBO eReader device are both succesful. In map Downloads of my PC showed several downloads as URLink (10).acsm   Unfortunately these downloads are not avaliable in the library of ADE.

Also I experience errors with the coding (unicode UTF-8) which makes conversion possible to make proper reading possible.

Please who can help to solve this error?