Garage Door Opener (cover) no longer working correctly in HA

I have a MyOpenGarage box that has controlled my garage door opener for ages, but for some reason it no longer controls the door within HA, but it does report the state (i.e. open/closed) of the door correctly within HA. But I can’t work out why.

I use the OpenGarage integration. This dashboard “button” shows the correct state, but won’t control the door. If I close the door using an RF remote control, the state within HA changes.

type: tile
entity: cover.my_opengarage

Is it a matter of using a Helper, and if so, which one should I use? Or something else?

Many thanks!

EDIT: Now sorted - a factory reset and all is good