I need to be able to receive .gcode (and other 3D) files in my price quote request form, but the upload button doesn’t allow the selection of these files.
here is the supported file types by Wix CM:
https://support.wix.com/en/article/field-type-support-and-limitations-in-the-content-manager
in case such file type is not supported, as the part of workaround, I can offer you to try embed some sort of third party form with HTML for example, which will let you to collect such type of files
from my side, I will forwad you query to the relevant team