CMS can not connect, but with browser I can

HI,

Looking into CMS, I started with the local systems; no issues there. Then I wanted to add a remote NAS. It does not work with IP, nor with FQDN and not with QuickConnect. Fun part is using my browser I can connect to these machines with IP, FQDN or QuickConnect.. Anybody suggestions?

Any help will be apprecited.

I didn't find the right solution from the Internet.

References:
https://forum.synology.com/enu/viewtopic.php?t=128410
Intro Video Company

Thank you.