Can't make WPO work

I purchased the Wordpress optimization service.
I activated it according to the article:

however the page speed insights scores are lower than before.
When I inspect page network I don’t see the headers like they should be
so I think the WPO is not working properly.

any ideas about what should I do to make it work?
the site in question is

thank you!

here are the caching page rules that I have:

and here are the PSA mobile scores that I get:

without WPO and with a caching plugin (W3TC) I was getting mobile score between 42 and 55.

any ideas how to improve this?


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