.dae file type Issue

newer versions of WordPress do some extra checks on the files, using both “extension” and “real mime-type”.

Have you tried to select the option “Check only file extensions” (it is the first one, above any “file type”) in the plugin settings page ?

I didn’t have that checked. Now I do but still not allowing upload of .dae

could you share a screenshot of your “extra file type” settings page and a sample .dae file ?

could you try the new version 0.4.0 of WP Extra File Types ?
Let me know if the new option fix the problem you are having

upgrade to plugin’s latest version and follow instructions givene here : https://www.ads-software.com/support/topic/cant-upload-excel-documents/#post-9078481