Translation of website with Themeforest and website not working on Iphones


Firstly, I would like to translate my website in several languages, but I can’t do it.
Do you have any advice on how to translate it myself in three languages with Themeforest ?

Secondly, my website is working on Android smartphones but not on Iphones. Is there a way I can fix that issue or should I change the theme ?

Thank you in advance for any advice you can give me,

Jean-Luc from Geneva, Switzerland

If you could drop me an email via the link, I could provide help (paid) to fix the mobile issues.

Beside, if it’s WordPress, you will need to purchase additional plug-in such as WPML for multi-language feature.