@Miguel_AGP It should be possible to use domain name instead of IP address, I have done it. Make sure your address includes the port (e.g. <domain>:51820)

@Hank21 Sorry, I didn't know I had to enable IDS/IPS first. However, after enabling IDS and doing a network test, I think I will not be using this feature. My download speeds went down from 750 Mbps...

@Hank21 Any idea when will this feature be available for the TL-ER7206 v1 router?

@Hank21 I distinctly remember having the SFP port disabled in the controller before 5.13.x, and I really hope in a future update you can again disable SFP port, if it's not being used.

@Hank21 in the same post you link to the beta version of the EAP firmware, which includes the EAP620 HD from v2 and above. Does this mean that whatever new feature comes about will not be included...

@Brian-C I got in touch with their support team, but in the end I ended up factory resetting my router, which fixed the issue.