Repositories strange problem

I have a repositories add/refresh problem, I get curl error each time I want to refresh the Main OSS, non-OSS or update repositories (only officials)
I had this problem with the 11.4 M5 and now with the 11.3

I disabled ipv6, firewall, tried zypper ref, zypper ve, manual refresh with yast, but the problem persists.

I have a VPN connection, and I can access the repositories URL from firefox

there are the repos that can’t refresh
Index of /distribution/11.3/repo/oss
Index of /distribution/11.3/repo/non-oss
Index of /update/11.3

couldn’t find other solution, can you help please ?

Try deleting them first and then add them again from the communities repo list in Yast.

didn’t solve the problem, can’t add it

I can ping but not