Maps installed on the SD card do not appear in the Basecamp 4.8.6

Hello,
I reinstalled Basecamp 4.8.6, because of Catalina upgrade. This time I have a new problem.

Maps installed on the SD card do not appear in the Basecamp 4.8.6. To resolve this situation, no Notification appears when I connect to the program.

Anybody help?

Kind regards,

Cemal Cetin