Hey Masa,
the comments in your posted link did it for me. After I added the notes, I had to delete all the standard services:
Transaction /IWFND/MAINT_SERVICE
Select service ZINTEROP, delete SICF-Nodes (left bottom side), delete systemalias (right bottom side) and (important!) click again on ZINTEROP and choos "delete service".
After that "add service", select your Systemalias, click "get services", choose /UI2/INTEROP and click "add selected services".
We also had to to this procedure for the service "ZTRANSPORT" and "ZPAGE_BUILDER_*
Thanks all - Have great christmas days!