Hello,
Thanks for contacting us and sorry for any inconvenience that might have been caused due to that.
Can you please confirm if you are using any page builder to create your pages?
Looking forward to helping you.
Hello, we are using Salient.
Hello,
We would love to help you further.
I tested the page on our External SEO Analyzer tool and noticed the alt texts are present. The same is the case in the source code.

As mentioned by you, you are using Salient page builder, Although, any theme or plugin will work with Rank Math if they are using WordPress’s Codex.
However, please note that some plugins/themes are not yet fully compatible with content analysis in Rank Math (including some built-in custom blocks). We suggest that you can get in touch with the support folks from Salient and show them this link:
https://rankmath.com/kb/content-analysis-api/
Many known companies have already added the compatibility, as it takes a few hours:
https://rankmath.com/compatibility/divi/
https://rankmath.com/compatibility/elementor/
https://rankmath.com/compatibility/themify-builder/
https://rankmath.com/compatibility/page-builder-framework/
https://rankmath.com/compatibility/flothemes/
Also, please remember, these tests are just guidelines and one does not need to follow them religiously.
We hope this information helps. Please let us know if you need help with anything else.
Thank you
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.