Can't send emails

Can't send emails

hi there,

I cant send any email. It doesnt give an error message but just doesnt react when I want to write something in the main body or press the "send" button. Also, drafts dont open properly. In the draft folder I can see the header and the beginning of the text but when it opens it only shows the recipient and the subject and main body are empty.
Refreshing and restarting the browser doesnt help and I have tried it in both firefox and safari.
I can receive and open emails without problem though.

Please, can you do something about this?
Thanks,
Johanna