Huntsman v2 broken after last Synapse update

Hi,
I own Huntsman V2 for a while now.
Back in 2021 I had an issue with Synapse, when it updated I lost possibility to type on the keyboard.
Disabling Synapse worked fine but I needed a fix.

After long trial and error run with support I managed to somehow fix it by unistalling software, drivers, restarting PC and installing it again in a different directory.

It worked fine until the recent update.
Now the issue is back.
It seems the new wersion of Synapse does not let me install it in a custom directory any more.
Please help!