The best place is to contact your local Graphisoft support centre.
There is also the GDLCenter forum (link at the top of this page) but there is no guarantee that Graphisoft will pick up on it there.
But it is a good place to discuss the problem.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11