I've just updated a client's website. The menu is not responding on the client's iPhone... he says that "it just stays on the Home page." I do not own an iPhone, but the mobile menu works as it should on my Android Galaxy phone. Any ideas as to what might be causing the problem on an iPhone? And if so, what should I do so it will work properly? TIA!

Joy

https://jbwroughtiron.com.au