HostCMS needs to restore the site

Welcome! You need to restore the site.

The challenge is this. There is a small site on the hostcms engine. about 30 pages (main, services, questions, contacts).
A few years ago I worked, then sent it to the archive in 2016 (both FTP and base).

Tried to restore recently - poured everything on the hosting (virtual).

A notification appeared on the main page: Zend Optimizer not installed

We will be glad to renovate.

The work plan is as follows:
We give access from ftp and the database.
Upload to yourself or directly on the hosting find an error (errors). write instructions on what, where and how to correct.
Close access.
We upload back to the hosting as it was before the repair and make the corrections ourselves just like you (what you fixed).

!! We need a specialist, not an intermediary. We have been working for several years, our goal is positive and long-term cooperation!

The task is to make the site work again. What it should look like can be viewed through the web archive.

Such a site is not one (about the same story, and on the same engine). We successfully do the first one, pay and then start working on other projects in the same way.
By payment: preferably not on a mobile phone, but on a card.
Communication by icq.

We are waiting for your suggestions.