Hi Ulf,
I wrote you an email with the instructions.
I have not written the manual update instructions here, because it is not a recommended solution, and we don’t want to encourage our users to use it instead of basic procedure. Since the manual update requires changes on the server level, it may cause data or setting loss. Therefore, particular caution is needed.
This problem with the update sometimes occurs because of WP security issues. As I earlier mentioned, we will fix it permanently, but currently, we have tasks with higher priority.
kind regards,
Michal