To make adjustments (CMS: WordPress, customization, backend)

Good afternoon.
You need to make a few adjustments on the website,
There are a few adjustments and targets for the website (WordPress) for experienced backend expert .
Only experienced (middle, middle , senior) specialist (not a broker, not a Studio) with a good background.

The site is already on WP. All page templates are set up.

Need to do:
1. View all kinds of errors
2. To optimize your scripts, cache and so on. In General speed and in General lead a normal optimization (pagespeed Insighs)
3. A separate task to install and configure Elementor

Link to a few more complete TOR selected specialists.

Please include in your answer the approximate range of cost of works.


Spam-answers – in failure. Offers turnkey website design and so on – in failure.
Please respect the overall time.


Thank you.