Hello @adigold,
Hope you are well.
First of all, make sure that you are using the latest version of the WPDM plugin because it’s working fine in our test environment.
Also, there can be a conflict with another plugin, can you please enable/disable other plugins for checking, you may also switch the theme to another for checking, please let me know then.
However, if still, the problem exists, then please, provide us with your temporary wp-admin login details and site URL in a private reply for checking the issue.
Thank You