Unable to delete custom workouts on ATV & iPad

am unable to delete my custom workouts that I created some time ago on my PC.

I use Apple TV to run Zwift on, I also have it installed on my iPad.

I have logged into ‘Zwift workout editor’ on PC and deleted all workouts I created from there. I have also deleted all custom workouts I created in the Zwift folder on my PC.

When I open the Zwift app on my PC, it shows up as all custom workouts deleted.

However, when I log into ATV they are still there, and also still showing up on my iPad, despite uninstalling both apps and reinstalling and logging back in.

So, it’s only the PC version of Zwift that is showing correctly.

I have waited patiently for the deletion of workouts to update on Zwift servers (assuming that is where they are held) for the past 4 days, but on ATV and iPad they won’t budge.

So, the PC App is showing correctly, but not ATV (and iPad) which are refusing to delete.