Are you a victim of a Registry Mechanic scam message.
Joanna Gadel is attached with SEO optimisation ( industry for a long time. This particular tactic is now easy for search engines to detect so is relatively uncommon. One black hat technique uses text that is hidden, either as text colored similar to the background, in an invisible div, or positioned off screen.
Forgetting to write for an audience is one of the biggest mistakes that bloggers make. That visibility is ‘natural’ and unpaid (‘organic’).