can't post

thank you for reading my question.
I got revive old post pro and use it.
There is no problem to post the tweet and facebook post when I start.
But finally it stop to post with bellows error message,

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There is no suitable post to tweet make sure you excluded correct categories and selected the right dates.
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setting is,
Custom Schedule :8hour
Minimum age of post to be eligible for sharing :30
Maximum age of post to be eligible for sharing :0
Number of Posts to share :1
post type :post
google analytics campaign:check

how can I solve it？

best regards

https://ww.wp.xz.cn/plugins/tweet-old-post/