About a year ago I installed Blue Iris and purchased the remote access app for my ipad. I tried numerous times to get the remote access app to work but the last few steps would never go through. I have a weird setup using two routers and a router extender so I thought this was the problem. I recently extended my support and went to my app to see if anything changed. It came up automatically and was working fine. I never even completed the setup. I have no idea what happened but I'm glad it's up and running. It was down for a year and suddenly it's working on its own.

Long may it continue to work

Have a good look at the settings in case you need to do it again