HI there,

Just got my device and wanted to setup DDNS, 

https://www.tp-link.com/uk/support/faq/1366/

https://www.tp-link.com/us/support/faq/1367/

yet everytime I log out and back into my web interface I get the message under Advanced > Network > Dynamic DNS

DDNS unavailable

If I log in again I can see my bound FQDN

log out and log back in its gone again

doing a DNS lookup it appears to resolved correctly at the moment, but I'm concerned if it changes will the TP link DDNS actually work.