Unable to add an attachment


I’ve been using K9-Mail for a long time. Today I tryed to add an attachment to an E-Mail and it didn’t work, nothing happend. I could continue writing and sending my E-Mail but without an attachment.


Edit: i just logged in to my email through Firefox and tryed to create an email and to add an attachment. It didn’t work either. I tried the same using the duckduckgo browser and it worked.