If you tried it better wash of your wallet or change keys or whatever protection. If you arent sure about the legality of some announcement try to contact first the official team or ask on their socials. Theres a lot of fake accounts trying to send some spam like this one via email and wanted to phish someone. Plus 27.7 % for a staking thats a huge considering xrp is old already maybe for new projects it can be big but knowing xrp for how long its probably a scam.