When submitting options on this page: https://www.easyrental.gr/me-endiaferei/?post_id=43907&cff_no_cache=dzlMZktMb3NyUXhtd3duUkp1Z1p6Zz09
I get a double form submission from some people. It does not happen to everyone, probably 20% of submissions but it happens in Greece and other locations occaisionally.
The plugin is: Calculated Fields Form using wordpress.
Anyone may have an idea?
I am new to wordpress, Ive reached out to the developer and they said its not the plugin, possibly the server.