Hi Nicholas, as the free student version does not support any CAD connections, I am assuming you are using a commercial version. Have you bought it from us or our Channel partners such as RAND? If you have bought it from Ansys directly, you should be able to open a new SR with us directly at Customer Support and Help Desk: Submit a Request | Ansys if it is from RAND, you can try their site Submit Support Case | Rand SIM . Please let me know if any of these two is possible.
In general, depending on version of Mechanical a few CAD versions are supported, can you please check if you are using the supported CAD version for Windows (ansys.com) or Linux (ansys.com).
You can also check it here: https://www.ansys.com/content/dam/it-solutions/platform-support/cad-support-2022-r1.pdf