Hello, Erkan.
I have the same problem and tried all scenarios but all of them were unsuccessful.
The following error is occurred when I try to manually add storage provider when I use "https" in URL:
The "Register new storage provider" operation failed for the entity with the following error message.
Unable to verify the authenticity of the specified host.
and the following error with "http" in URL:
The "Register new storage provider" operation failed for the entity with the following error message.
A problem was encountered while registering the provider.
Can you advise me what may be wrong?
Thanks,
Konstantin