Hello,
There is no reason to talk like that about a project made by 2 students in their free time, please behave accordingly in the future.

You can submit a bug report either in our Discord community or via email "eov3cv@hotmail.com"
V3 states clearly in both license and extension manifest/userscript header what google-based URLs can be accessed, it does not make any other type of request on your behalf, it only requests official Google APIs endpoints.
You can also check with any logging mechanism (either a dedicated program or even a Fetch/XHR hook) what requests it makes and what data they include (the same as any official client).