@popeti, your domain is not registered on our DynDNS, so there is no need to reset it.
However, our server should not have led yours to believe the registration was successful. That’s another matter.
Let’s fix your subscription. Can you try the following commands?
sudo ls /etc/yunohost/dyndns
There should be only one file starting with K and with the .key extension, let’s bak it up (replace accordingly):
sudo mv /etc/yunohost/dyndns/<filebame>.key{,.bak}
Then try to subscribe again:
yunohost domain dyndns subscribe popeti.nohost.me -p (it will ask for the registration password).
To try to understand what’s happening, I see this in our logs. Can you confirm these were your repeated manual attempts to delete the domain?
[2026-08-17 19:14:51 +0200] [682895] [INFO] Registering popeti.nohost.me
[2026-08-17 19:14:51,633] INFO in dynette: Registering popeti.nohost.me
[2026-08-18 18:02:59 +0200] [688321] [INFO] Deleting popeti.nohost.me
[2026-08-18 18:02:59,246] INFO in dynette: Deleting popeti.nohost.me
[2026-08-18 18:05:48 +0200] [688320] [INFO] Registering popeti.nohost.me
[2026-08-18 18:05:48,498] INFO in dynette: Registering popeti.nohost.me
[2026-08-18 18:07:44 +0200] [688320] [INFO] Deleting popeti.nohost.me
[2026-08-18 18:07:44,293] INFO in dynette: Deleting popeti.nohost.me
[2026-08-18 18:08:17 +0200] [688321] [INFO] Registering popeti.nohost.me
[2026-08-18 18:08:17,365] INFO in dynette: Registering popeti.nohost.me
[2026-08-18 18:09:33 +0200] [682895] [INFO] Deleting popeti.nohost.me
[2026-08-18 18:09:33,586] INFO in dynette: Deleting popeti.nohost.me
[2026-08-18 18:09:34 +0200] [682895] [INFO] Registering popeti.nohost.me
[2026-08-18 18:09:34,659] INFO in dynette: Registering popeti.nohost.me
[2026-08-18 18:11:04 +0200] [688322] [INFO] Deleting popeti.nohost.me
[2026-08-18 18:11:04,807] INFO in dynette: Deleting popeti.nohost.me
[2026-08-18 18:11:59 +0200] [688321] [INFO] Registering popeti.nohost.me
[2026-08-18 18:11:59,935] INFO in dynette: Registering popeti.nohost.me
[2026-08-18 18:17:32 +0200] [688322] [INFO] Deleting popeti.nohost.me
[2026-08-18 18:17:32,060] INFO in dynette: Deleting popeti.nohost.me
[2026-08-18 18:18:10 +0200] [682895] [INFO] Registering popeti.nohost.me
[2026-08-18 18:18:10,700] INFO in dynette: Registering popeti.nohost.me
[2026-08-19 10:58:29 +0200] [693836] [INFO] Deleting popeti.nohost.me
[2026-08-19 10:58:29,055] INFO in dynette: Deleting popeti.nohost.me
to others, you may try similar approach if you are getting the peer did not know the key we used. This is not applicable if you get the peer did not like the peer we used.