Hello,
Thank you so much for getting in touch.
You are blocking crawler access to your entire website in your robots.txt file.
https://www.gunmade.com/robots.txt
Here is a screenshot of what we are seeing:

Please login to the root of your website and delete the robots.txt file.
Then, the one created by Rank Math will take effect and you can edit it from WordPress Dashboard > Rank Math > General Settings > Edit robots.txt
Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.
There is no robots.txt file in my root folder… I don’t understand why it’s having that issue. Is there anything else I can do?
Hello,
If there is no robots.txt file in the root folder, you should be able to edit the robots.txt file by going to WordPress Dashboard > Rank Math > General Settings > Edit robots.txt
Make sure your robots.txt file looks similar to the below-mentioned one.
User-agent: *
Disallow: /wp-admin/
Allow: /wp-admin/admin-ajax.php
Sitemap: https://yourdomain.com/sitemap_index.xml
Replace yourdomain.com with your domain name.
If you are not able to edit, we might need to take a closer look at the settings. Please edit the first post on this ticket and include your WordPress & FTP logins in the designated Sensitive Data section.
Please do take a complete backup of your website before sharing the information with us.

It is completely secure and only our support staff has access to that section. If you want, you can use the below plugin to generate a temporary login URL to your website and share that with us instead:
https://wordpress.org/plugins/temporary-login-without-password/
You can use the above plugin in conjunction with the WP Security Audit Log to monitor what changes our staff might make on your website (if any):
https://wordpress.org/plugins/wp-security-audit-log/
We really look forward to helping 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.