Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
For your first issue, I checked some posts’ source code and also in HeyMeta (https://www.heymeta.com/) and even in MetaTags.io (https://metatags.io/) and it shows the title without that extra text, so it is not a problem in Rank Math or your website.
Do note that if everything’s fine and Google still decides to show a different meta title/description for your search keyword, there is nothing you can do as Google sometimes ignores the custom meta info altogether and show something from the page’s content that matches the search intent better.
The best you can do is optimize your meta tags to try and match the intent of the search/keyword.
You can read more about it here
https://support.google.com/webmasters/answer/35624?hl=en
This section sheds light on that:
Why the search result title might differ from the page's <title> tag
About your second issue, I see 58 posts in your posts sitemaps, could you let us know which posts should be there? (Their URLs)?
Hope that helps. If you have any further question(s), please let us know. Thank you.
Hello,
I have updated the sensitive data as requested. Can you please check further?
Thank you.
Hello,
When did you delete it? Since you have to let Google time until it crawls your website again.
Looking forward to help 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.