Budget: 1000 UAH Deadline: 1 day
Hello, Vladimir!
I am familiar with the problem, I often optimize WordPress sites after receiving such "letters of happiness" from hosting. Usually, the issue is that the site is making too many requests to the database or the processor, and the hosting starts to complain.
Since the site is a simple catalog, it should run smoothly. I will handle this quickly.
How I will solve the task (step by step):
Analysis: First, I will look at the load logs and through a special plugin, I will see what exactly is causing the slowdown (often it is one "heavy" plugin or theme).
Database: I will clean the database of "junk" (old post revisions, spam comments, temporary files), this will immediately reduce the weight.
Caching: I will set up proper page caching. This is the main thing - the hosting will stop stressing out by serving ready pages instead of generating them every time.
Limits: I will limit the frequency of server polling (Heartbeat API), this is a common cause of overloads.
Check: In the end, we will measure the speed "Before" and "After", the load should decrease.
I will do everything carefully, without breaking anything.
Deadline: 1 day (most likely I will manage it in the evening). Price: 1000 UAH.