BuddyPress.org

Hi,
My registration seems to work fine on the computer but I get reviews that some users can’t register on their mobile device. I tried to register through mobile and have the same issues. After completing the form I get redirected to the same registration form with no errors.

Website info:
– WordPress version: 5.2.3–nl_NL
– Website: mierenmarkt.be
– Registration form: mierenmarkt.be/registratie

I tried:
– Disable plugins (-> didn’t work)
– Change theme to default (-> didn’t work)

Anyone knows any fixes? I don’t get error reports in my error logs.