My website’s position has dropped

Hello,

I’m contacting you because for the past two months, my website’s position has dropped in Google search results for the main keyword (the site has gone from 12th position to 50th in a very short time).

I first contacted Google support, explaining my problem, and they told me it was a WordPress issue, the reason I’m contacting you.

I don’t understand the reasons for this drop, I haven’t made any changes to my site that could explain this.

Could you please help me?

Thank you in advance for your reply.

Best regards

The page I need help with: [log in to see the link]