Watch crashed - custom data screens disappeared and won't come back.

Hi all, looking for a little help here.

Just over a week ago I was out riding and had to upload a map to my Forerunner 945 whilst an actitvity was already running. This was a bit too much for the watch and it crashed and was out for about an hour, seemingly doing an in-depth reset.

When it came back on it was all fine, except that the custom data screens for workouts I had installed via the Connect IQ app had disappeared. I now can't get these back.

I've gone back via the Connect IQ app, I've done a factoy reset and I've looked through the forums - there doesn't seem to be any reason for why they're not coming back to the watch and I feel I may be missing something obvious.

To make clear my problem, I made a video here - https://www.youtube.com/watch?v=Q4Edt3W9bTE

Is anyone able to help with how to get these back? The ones that come with the watch aren't great and the ones I had were perfect for what I needed.

Any help is appreciated, Matt