I did some research, and this seems to be some known issue in combination with flash and a few browsers on the windows platform. The "word" is that for some reason, depending on platform, keyboard and language, the @ symbol changes location to American keyboard. Can anyone try the following:
Try to use shift+2 to add the @ symbol in the input field ...
With the above, we can at least get one step further and confirm the issue.
Also, can any one of you try to download the following file (right-click, choose "save as"):
https://www.photo.gallery/demo/x2/iv-include ... ue2fix.swf
Download it, rename it to "imagevue2.swf", and replace it in your gallery. Now, empty your cache, and check the contact form and see if the @ symbol works. This fix is only tested for the contact form for now, so no change has been made to the send link form. I don't have the opportunity to test this myself ...