Can't add new entry in Owntracks integration

Got a new phone and have tried to add a new entity under the owntracks integration via the UI, but it gives me a dialog box that says Aborted. Only a single instance is necessary.
I can’t seem to add my new phone now.
How do I go about getting this working?

Hi @danbutter, is your external URL http or https? I noticed that the url given on the integration setup page didn’t reflect my https status so a minor amendment and it was all working

Well either way I never figured a way to add anything new. I had to figure out how to copy the access key from my old phone to new. I’m lucky it wasn’t stolen or broken and I didn’t trade it in or that wouldn’t have been possible.
Still don’t know how to add a new phone to the integration.