I Googled, nothing relevant, so I came here.
”
Search Console has identified that your site is affected by 4 Merchant listings structured data issue(s). The following issues were found on your site.
### Top critical issues*
Invalid floating point number in property “price” (in “offers”)
\**Critical issues* prevent your page or feature from appearing in Search results.
### Top non-critical issues‡
Missing field “hasMerchantReturnPolicy” (in “offers”)
Missing field “shippingDetails” (in “offers”)
Invalid string length in field “name” (in “brand”)
​
WHen I dug deeper they appeared to be related to merchant listings that I don’t recall ever adding to my site.
Is it some form of spam or virus?
Your site appears to be using an ecommerce plugin, like Woocommerce.
Not sure what you googled, but these all seem useful: [https://www.webnots.com/how-to-fix-invalid-price-format-in-property-price-in-wordpress-reviews/](https://www.webnots.com/how-to-fix-invalid-price-format-in-property-price-in-wordpress-reviews/)
[https://wordpress.org/support/topic/missing-field-hasmerchantreturnpolicy/](https://wordpress.org/support/topic/missing-field-hasmerchantreturnpolicy/)
[https://wordpress.org/support/topic/missing-hasmerchantreturnpolicy-and-shippingdetails-in-offers/](https://wordpress.org/support/topic/missing-hasmerchantreturnpolicy-and-shippingdetails-in-offers/)
https://wordpress.org/support/topic/missing-hasmerchantreturnpolicy-shippingdetails-field-error/