ecommercer

I recommend to choose ready to use solution with good support e.g. https://nginxhosting.com/

NginX support mod_rewrites, so it is not an issue.

I recommend to choose ready to use solution with good support e.g. https://nginxhosting.com/

What errors you see?

Rather strange. Avactis should work fine with WordPress.
I think that something wrong with configuration of your production server.

BTW. What is MAMP?