Topaz DeNoise stopped working as photoshop plugin after installing Photoshop 2023

I have been very happily using Topaz DeNoise for at least a year inside Photoshop 2022 (23.4.1 currently) and yesterday I downloaded Photoshop 2023. Since doing this Topaz DeNoise will not open from Photoshop 2022 or indeed 2023. I downloaded Topaz DeNoise again and installed it but still no joy. The stand along Topaz DeNoise works but I much prefer the plugin version.

Any idea why it has stopped working and any suggestions how to resolve this?
I am on a HP Desktop PC with Windows 10 - NVIDIA GeForce GTX 660 (yeah I know this is ancient! as is my PC but it was working fine still - yesterday!)

Thanks in advance