I disabled the regex redirects and everything works, thanks!
Screenshot as requested…
https://www.amazinggracepantry.org/hotlink-ok/rankmath-redirects.jpg
The “es” redirect is to keep the English version of our site from using a subdirectory or subdomain (we use a translator for allowing a Spanish version of the site).
The “main” redirect is because our site started in a subdirectory and there are still some links out in the ether for it according to the hit counter.
Until the latest update of Rank Math, these worked without issue.
I do use other redirects, such as for erroring out phishing attempts and for correcting PayPal’s IPN. They seem to work fine.