Hello,
according to this cool documentation I set up some RPC calls to check the modem status and switch SIM cards on my Spitz Router.
This I do from my Home Assistance instance in my local network to the GL-X3000 router. Means I do this authentication not on the router but on a different machine.
That worked pretty well but since a few month I can’t authenticate myself anymore.
The challenge works, I get alg, salt and nonce.
Then I encrypt salt and password, and hash it with username and nonce (As in the above documentatoin)
When posting the login I do get an error “Access denied -32000” and after a few trys later the error “Login fail number over limit” and need to wait about 10mins.
What has changed in the past that I cant authenticate myself anymore.
Any help is appreciated 
Best regards,
Rene