Same issue here, also, I cannot delete or modify the records in the screened ips section which show they have an ‘invalid date’. This is the first time seeing the invalid date entries error.
I’ve had the not being able to log in issue several times in the past and searched the logs for the ip I was using, I couldn’t find a record and still couldn’t log in until I used a different ip to log in (either flushing the dynamic ip or using mobile internet).
I’m concerned that this may be affecting forum users also.
Edit: I didn’t delete/edit the ips out of the screenshot, the ip logs actually appear blank in discourse.