Update pihole to last version

Good evening to all,
*using pihole on docker synology, I did the maj as usual and restore the configuration. to my surprise, the pihole container does not reboot continuously. *
I then downloaded version and installed it and it works (but I can't restore the settings).
I would like to know if anyone has had a problem with the latest version of pihole and if so, how to solve it?

What software is this?

Pi-hole current versions are as follows:

  Pi-hole version is v5.3.1 (Latest: v5.3.1)
  AdminLTE version is v5.5.1 (Latest: v5.5.1)
  FTL version is v5.8.1 (Latest: v5.8.1)

thanks for you answer.
for the, you can see the attached picture.
precisely, since I downloaded the lasted version, my pihole do nothing but restart itself

good evening,
I just saw my problem.
in fact i had an error in my backup file. i just reconfigured everything and everything is ok