I’ve just made some mess in my NAS network settings (virtual switch) and have lost an access to it. After “short reset” (reset button for 3 sec) Qfinder finds it but combination admin/CloudKey (from the sticker) gives “wrong user/password” message. I am connected directly by ethernet and have o lot of data to reach ;). Any tips&tricks?
TS-453D, QTS 5.2.4.3079, acces from MacOS 14.3
No backups ? …
If neither Cloudkey nor MAC1 work (in case the firmware was not updated) then open a ticket with QNAP support.
Only backups 
That’s the point
Thanks for your help and I’m going to Support ;(
If it’s only backups, then you can restore the data again, worst case … so no worries (if not … then it’s no backup)
I have found the support site with that problem:
I'm unable to log in to QTS and the password reset does not work. What can I do? | QNAP (ES)?
I did some steps (some doesn’t show in Terminal) and finally logged in and changed password. Now I have an access to my NAS but… every app “is stopped. Do you want to start it now?” Of course I want and click OK and nothing happens…
I would re-apply the current firmware, something might have gone bad