I want to start right now - Fix 4 WordPress & WooCommerce issue using TeamViewer

Hi, I'm facing following three issue with my WordPress & WooCommerce site you need to solve it using TeamViewer and please bid if you are expert in WP. Issue 1 - Following link of my product is not loading and giving 504 error [login to view URL] Reply from hoasing support on above issue is below: I tried to find what is causing this issue but no to avail. I attached to the process but no useful information is showing in the results. I deleted the transient records from your database, switched between different PHP versions without any result. In this case my advice is to contact your developer for assistance on this matter as this issue seems to require extensive debugging which is out of the scope of our services. Issue 2 - In Permalink Settings under the Product permalinks if i set "Default" link style then my all products giving error 404 page not found. And if I set is to shop based then all work fine. Issue 3 - WooCommerce Helper module is under inactive module section and if I activate it then wordpress show plugin activated but again this module reflect in inactive module section Issue 4** (**Optional this issue may fix after fixing above issues) - I don't know how but because of some module or code my site speed it down drastically. Please check it