why won't VR recenter work anymore with varjo aero? Please help!

Everything used to work fine for years. Then my next level V2 motion platfrom broke before christmas and I stopped playing any games for around 4 months while I awaited the arrival of a DOF H3. Now I've had this new platform for over a month but have not been able to enjoy it because I cannot get AMS2 (and other games) to work properly as I cannot get myself in the correct driving position in the cockpit.
Can I say immediately that this is nothing to do with the new motion platform. I have set it up but I haven't used it because AMS2 isn't working, so the rig isn't even getting switched on at the moment - it is completely out the loop.
I am also above the cars in AC and ACC. No matter which button I assign to recenter VR in any game, it doesn't work in game. All other assigned buttons work, such as pause game or pit limiter etc.
I have unistalled and reinstalled the varjo aero several times with no change. I have gone back to earleir versions from last year when it was all working ok, but no change.
The headset works fine and as expected with Euro Truck Simulator 2 and with games like DCS World and Il Sturmovik where I can recenter in the cockpit ok.
My system details are AMD Ryzen 5 5600X 6-Core Processor 3.70 GHz 32GB RAM 3080ti GPU Fanatec CSL 8 NM DD wheel base and Fanatec club sport pedals. I am on windows 10 home.
I thought I read somewhere that maybe it is a win 10 issue and I need to update to win 11? I do not really want to wipe all my games and reinstall the whole steam thing again.
Any guidance massively appreciated! Thank you!

 

I have also verified the integrity of the affected game files several times to no avail...