Hi Neo,
I think you have JS error on your website and it affects wpForo front-end JS. This is a simple JS conflict with your theme or with some plugin. Please leave forum URL to allow us debug this.
Also check this topic and make sure you don't have these plugins installed:
https://wpforo.com/community/faq/conflicts-with-other-plugins/
It seems that you don't read what I write. I said that I already deactivated all the plugins and still there is the problem. I also said that it is not only my website, but your website also. Here on the wpforo.com/community the problem is the same. Here on this forum the problem is the same. Here on the wpforo.com/community, I see the like, edit, delete and solved buttons, but when I click them on mobile on iOS nothing happens and they work only on desktop. Please read what I write because I am repeating myself and you are giving me automatic answers.
I don't see your website URL, please leave it here to allow us test it. And make sure we can register there.
Here is the website:
on this website! Your website! The like, edit, delete, solved buttons don't work on mobile iOS!
On which iOS versions have you tested the plugin?