Security Breach : someone deleted and stole my PAID Rank Matj Plug In

Hi

I purchased and had the PAID version of Rank Math installed in https://ethoseducation.net/ last month

500 google phrases were activated

I went to my wordpress plug in lists just now : https://ethoseducation.net/wp-admin/plugins.php?s=rank&plugin_status=all

It is NO LONGER THERE!

I logged into my Rank Math user id area

It says I have NO PLUGINS

the person I paid who installed this had web access and he probably stole it for another site

Please assist and recover the plug & the 500 KEYwords setup with it.

I went to where I purchased it: https://wp99.in/product/rank-math-seo-pro/?attribute_pa_software-package=one-year-update

It does not show the plugin activated number??

WHERE IS THIS? I have the zipped install file.

Martin