Hi,
we solve the problem with WPForms-support. Please check the mime-types of additional file-types in “WP Extra File Types”. The MIME-Type must be for Step-, Iges- … files “text/plain”. Please look on following screenshot.
https://cl.ly/80e397ff7ef7
Have a nice day, Jürgen
Hi,
I have the same problem, did you solve the problem?
Thank you, Jürgen!
