CD station jammed

How to open the Rose cd station. It sucked the cd and does not spit it out.
I know: eject does NOT work. The reason is that once it was clever to thin the border of cd as I did and now the transport does not have proper contact to the edge.
Can a user open the cd station? It looks solid, no visible screws. Thanks for help.
(Dont suggest the soft or hard eject… done.)

@KaiE

Please help us confirm a few things.

  1. Are you currently using an RSA780, and which device is it connected to?
  2. Are you using the RSA780 connected to a ROSE device?
  3. The RSA780 is not designed to be disassembled by users. If disassembly is necessary, please contact the distributor in the country where you purchased the RSA780 for assistance.