Hi @georgejipa ,
Thank you for the reply.
1. I can see the custom maintenance page when Hide My WP is disabled. So I guess the server is alright.
2. Yes I changed them. I added them to exclusion list, but it didn’t make any difference. Although, a couple of times I ended up having an empty WP maintenance mode settings page saying “security check” in the upper corner. Maybe I should ask Hide My WP about this?