we currently stumbled upon errors when trying to open pdf files (maybe all filetypes) that have a + in the filename. Opening the files directly from the library works fine but when trying to open the files through the list or library control it redirects to an error page "Something went wrong, please try again later".
great to see you are still around. Hope you are well!
We do have the current version. As you can see in the video it only has trouble with PDF files to open. But as I think of it we have the Adobe Acrobat extension installed in SPO so maybe that is what's causing the issues in combination with Plumsail? Speaking against that is that the link to the files is not the acrobat link and the files open in SharePoint.