Ubuntu LTS Upgrad 22.04

I clicked on settings nothing happens i get to the prompt saying i should upgrade to Ubuntu 22.04 LTS?

I'm wondering if some of the ubuntu 22.04 has been installed on your system?
Go to (Gnome) Settings --> About

It should say Zorin there

I get this when i am in the settings and about i have dark theme?

okay no harm done it seems.

Lets see this file.

cat /etc/update-manager/release-upgrades

I get this message in the terminal?
:

I made a typo and have corrected it

I tested again and i got a different message?

I got this message now after your change?

It's set to upgrade lts. Let change that to "never"

sudo gedit /etc/update-manager/release-upgrades

in the bottom of gedit where it says Prompt=LTS change it to Prompt=never

then try again with update.

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Like this ?

yes, now save the file and see if the problem has gone

Now the upgrade question is gone?

Yes, as it won't annoy you anymore with upgrading to ubuntu.

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These 2 should not be in your list. So you installed somewhere a multiverse, and universe of Jammy Jellyfish (22.04 !!!) inside the Focal - real OS sources.
You should remove them at all costs ! All your sources should be restricted to Focal only (Ubuntu 20.04 ) .
You may not have false flags for upgrades, but you will have a TOAST of a MIXUP of packages and Security Fixes in your system.

If the system, now today, runs fine = just remove the Jammy repositories out the list.
Note : this is an error by your own doing ! NOT a Zorin fault, nor an update fault.

Did you upgrade the Kernel to the Mainline version ?

How can i remove it?

How can i remove these?

Now open the "Software and updates" app and switch to Main server. The list @Storm gave you is the denmark (i think?) mirrorlist. If you don't live in denmark you should use the main.

I live in Sweden?

How should i change it because now i have problem to update?

Open the "Software and Updates" app.
Post a screenshot, I'll help you.