Thanks for taking the time to share this with us, I am sorry that you are experiencing this. I do have a few clarifying questions if you are comfortable sharing:
Do you have both the Secret Recovery Phrase and the imported private key in question both safely backed up and potentially accessible?
What was the last thing(s) you remember doing in the extension prior to the error message appearing?
Any additional context that you can share to help support efforts to reproduce this issue?
How many accounts did you have in the wallet?
Does this persist with updated OS (13.5+) and browser(117+)?
What is this about?
MetaMask cannot be started.
The mnemonic phrase has been restored, but the imported private key cannot be restored.
DETAILS:
ERROR MSG:
Scenario
No response
Design
No response
Technical Details
No response
Threat Modeling Framework
No response
Acceptance Criteria
No response
References
No response