[ovirt-users] Can't log on into my engine : keystore was tampered with, or password was incorrect

Hello, I had an issue on my oVirt 4.3 environment that the certificate was expired. Which I understand was not smart but now it's to late to update them. I found some information on how to fix that but the more I tried the more I got confused and the further I think I got from solving this. So I took a full backup and started a new installation off my engine on a centos 8 stream and oVirt 4.5. After I did the complete installation it worked fine but with a clean environment and I really wanted to restore my current setup. So I did a engine-cleanup and a restore off the full backup. I think it went fine. but when I log into the engine I get the message keystore was tampered with, or password was incorrect even before I try to log in. Why is it telling me this And how can I figure this out and solve it ? Kind regards.