@Kamen Sotirov ,@Thierry RAZAFINDRAKOTO Thanks for your patience on this.
Upon investigations,there were changes made at the power automation end. when any user with no license related to Power BI/Power Apps/Power Automate try to edit the custom connector then the error message is observed. To check the license you can navigate to\ AAD --> Users --> License. Power automation team is still working on the issue and for now you can leverage the workaround editing the custom connector using the ARM template.
Deploy a Logic Apps Custom Connector Using ARM Template.pdf
I have attached the instructions shared as .pdf in my comments you can refer to them.
@Kamen Sotirov Thank you for reaching out to Microsoft Q&A, apologize for any inconvenience caused on this.
Our Engineering team are aware of this issue, and they are actively working on it. I will update here if there were any udpates
Hi all,
We have the same issue here. Please it's critical.
Thank you.