You may have gotten a notice from Wix informing you that they're upping the sending limit for email campaigns from 3 to 200! Yay! Here's what you should know:
Spammers & Bots
There are some very savvy spammers and bots out there. It's always a good idea to periodically check your site members and contacts (in your Wix account Dashboard) and clear out any fishy looking subscribers or site members. This is true of Wix.com and ANY online-based accounts you may own.
Google search running slower than usual?
It's time to clear out your "cache & cookies". Here's how (read the whole article so you know what to expect): https://support.google.com/accounts/answer/32050?hl=en&co=GENIE.Platform%3DDesktop