Hello,
Thank you for contacting the support, and sorry for any inconvenience that might have been caused due to that.
Getting the sitelinks is an automatic process. Basically, you just have to have enough authority and backlinks for Google to deem your website worthy of those sitelinks.
Here’s Google take on it:
https://support.google.com/webmasters/answer/47334?hl=en
And here’s how to get sitelinks:
https://bloggingwizard.com/google-sitelinks/
Regarding your website’s meta title issue, make sure that the new meta title is correctly rendered on the front page.
Check it in your Page source:

You can use this tool for the same as well:
https://www.heymeta.com/
If it matches your settings, then you must check if Google has seen the changes already or not.
For that, please check when the Google cache was updated for that page:
a.

b.

If the cache date is from before adding the new meta title/description, then you just have to wait for Google to re-crawl and re-index the page with the new info.
Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.
hi Jeremy,
Thanks for the response. The information you provided are quite helpful.
But regarding to the Separate Character, It’s still not right on Google while it’s correct on Instagram. I’ve check all the things you suggested to check, including:
(1)meta title itself is right, but where can I check whether it’s correct for Separate Character?
(2)Google cache has updated on Jan 31th, which is after the time I settle the Separate Character as “|”
How to make it right? Thanks.
Hello,
Thank you for following up.
Please 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.
Here are some of the common reasons Google might not use the meta title/description you provided:
– The meta description is not relevant or useful (ie, just a collection of keywords).
– The exact same meta description is provided across a large number of pages.
– The meta description doesn’t match what the user is searching for, but other content on the page does.
There is a whole article dedicated to this on SearchEngineJournal:
https://www.searchenginejournal.com/google-offers-suggestions-for-avoiding-meta-description-rewrites/359884/
Here is an example showing Google changes title depending on the keyword used:

&

The best you can do is optimize your meta tags to try and match the intent of the search/keyword.
I hope that helps. Thank you, and please don’t hesitate to contact us if you need further assistance.
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.