I was trying to register for the forum yesterday, obviously I succeeded, but not without a puzzling error which slowed me down. I was successful when I registered using a different browser program (Vivaldi) than the one I was currently using (Chrome) with a bunch of tabs showing different forum pages. Clearing cookies and restarting the browser might also work. I didn't try that myself. The first two fields (name and email) showed a message "The field xxxxxxxxxxx was not recognised", and if I continued anyway and clicked submit, the page returned a list of several more errors which I can't remember. I saved a screenshot of the initial errors but I can't find the upload button to display it. A bit strange, I was able to do that yesterday in a different post. I tried to search the forum for registration instructions but didn't find anything specific about the error, hence this post, in case other prospective members encounter a similar issue. I also found this link which might be relevant to forum admin ... The field '53dac53bcf058071683f83b2e5fe40c7' was not recognised.