InterDat wrote: ↑Fri Jun 29, 2018 12:01 am
When using a desktop PC
No, you're using an internet browser.
InterDat wrote: ↑Fri Jun 29, 2018 12:01 am
a mobile phone, iPhone, Android or other
No, they also use internet browsers.
InterDat wrote: ↑Fri Jun 29, 2018 12:01 am
"The submitted form was invalid. Try submitting again.
I can confirm that this happens in about 1/30 cases and it's always a mobile device, albeit cookie settings of the board installation are correct. I still have no idea about the culprit, but it neither affects all mobile users, nor does it affect all iPhone users. In any case your board installation (server) is
not the cause - the internet browser (client) acts wrong and it almost looks as if it won't handle cookies at all or even treats them wrong.
If you want to analyze it then request more details, such as: which internet browser in which version on which operating system in which version. In theory those users should also have problems with other websites.
If you want to advise people to use a workaround then tell them to use a different internet browser (i.e.
Firefox instead of
Chrome, or
Vivaldi instead of
Opera).