Budget: 20000 UAH Deadline: 15 days
Hello to Peter.
I looked at your website. Errors may be in the site template and in the OpenCart core.
The question is when they appeared – were they originally or appeared after the update?
Installed template on the site - purchased or self-written?
To solve the tasks of your TZ: this is the job of the programming - a vertical, JS, PHP. You have to get into the foreign code, understand, the cost of work corresponds.