@Pac in your case I found the record based on the port number. Looks like your DNS name is not very reliable. I tried to resolve it, sometimes it works, sometimes it doesn’t. (Even if I use 1.1.1.1 or 8.8.8.8 dns servers).
Looks to be a problem on this dns provider.
We checked our DNS servers and everything was fine.
I would suggest to use different host names. (no-ip.com and dynv6.com were recommended for me.)
If you changed your hostname, ping me, and I can fix the DQ state for you.