Hello @HRHMayLiu ,
It looks like your last couple of social posts had an error with one of the Instagram accounts, which can be viewed on the post's reporting page:
If clicking Retry doesn't alleviate the issue, you may need to disconnect the Insta page from your Constant Contact account, then re-add it. You may also need to check and make sure that particular Insta profile is a true Business-type (not Creator or any other type) page on Instagram.
See also:
Setting up Insta business pages
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