Hi,
>"the home page format completely changed as shown."
As shown? We need to know how it was before, only then we can see the difference.
Post a link to another online picture which looks like you want it.
>>"AutoCAD seems to be working fine. Can i change it back?"
Back? Back to what? You didn't described what changed and how was it before.
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Two things:
Just the light vs. dark color theme? Command: OPTIONS
color theme to DARK
https://help.autodesk.com/view/ACD/2022/ENU/?guid=GUID-F464608C-15BC-48E8-9484-D311053D9B73
And reset the whole settings, by "Reset to default"
https://knowledge.autodesk.com/support/autocad/learn-explore/caas/sfdcarticles/sfdcarticles/How-to-r...
(after starting 'ResetToDefault', export your current settings as backup)
