Only apply to this project if you can start right away, because I need it done in 48 hours max! This is very important, my store is losing sales until the problems are solved!
I need some problems on my Magento Store to be solved. They are:
- Add to cart button doesn't work properly. Sometimes it adds the product, other times it does'nt add, and leads my customers to an empty cart.
- Onepage checkout is not working properly too, only guest checkout is working. Trying to login leads to their old cart (missing current guest cart), or to a 404 error page. Register during checkout also doesn't work, ending up in a 404 error, or an empty cart.
What's strange is that the store works differently in mobile and desktop.
I already tried backing up 2 months, tried default theme, and other things.
My Magento's version is CE 18.104.22.168 and the website is [url removed, login to view], it's in brazilian portuguese.