Problem with attachment in Apple mail

Hi Graham, thank you for the information. Before contacting the community I had contacted the dropbox technical service. They had replied that the problem was known and that engineers were working on the problem, but I did not get much support.

The bypass solution I found is not a perfect solution, but it allows me to work with customers every day. I still have one problem that I cannot understand: I can only attach documents if I use Apple Mail. In some cases I have to use Spark from Readdle, but I cannot attach documents.

In all cases you can contact me at the email linked to my account.