Hi folks! So we think we are making headway with this (...she says, with fingers tightly crossed).
The tech team think that some of you might be using outdated versions of iOS and Safari, which could well be the reason why you're having trouble posting. They tested it out on older versions and were having the same problem, but each time they used the latest version of both, things seemed to work fine.
Would you all be able check the versions of iOS and Safari you're using please? You can find the version of Safari (if, in fact, you are using Safari) here: whatversion.net/safari
Thank you!