Cert install is failing letsencrypt. MIAB up to date

[alento]

With all due respect OP, it is not really necessary to have three threads with the same issue.

SSL certificate already expired - cannot login to Admin Portal for MIAB

If you recently upgraded (to 0.28) Let’s Encrypt changed something on their end which is causing the MiaB install script to skip their request to accept their ToS. Typically rerunning sudo mailinabox will fix this. You did not provide any error info, so I am grabbing at straws here… if that does not solve your problem, please provide more info.