coopphp

I’ve managed to replicate the bug. If I disable the multi-selects at the bottom the plugin works as expected. So it registers every time and shows errors on submitting invalid data.

So something in the following values is breaking your multi-select field:

Aikido, Aikido & Budo, Angling, Archery, Athletics, Badminton, Baseball/Softball, Basketball, Boccia, Bowls, Boxing, Canoeing and Kayaking, Climbing, Cricket, Cue Sports, Cycling, Darts, Exercise, Movement & Dance, Equestrian and Horseriding, Fencing, Flying, Football, Girls Rugby, Goalball, Golf, Gymnastics & Trampolining, Handball, Hockey, Ice Sports, Judo, Kickboxing, Korfball, Lacrosse, Martial Arts, Modern Pentathlon, Mountaineering, Multi Sport, Netball, New Age Kurling, Orienteering, Rounders, Rowing, Rugby League, Rugby Union, Sailing & Windsurfing, Scuba Diving, Sensory, Shooting, Snowsport, Soft Play, Squash & Racketball, Street Cheer, Sub Aqua, Swimming, Table Tennis, Taekwondo, Tennis, Triathlon, Volleyball, Water Skiing and Wakeboarding, Weightlifting, Wheelchair Basketball, Wheelchair Rugby, Wrestling, Youth Club

I’m glad I managed to get to the bottom of this!