I know what might have happened with you and I have experienced it myself a lot too but I cannot restore the posts.
they get deleted each day. Example, if you post 1000 posts today, and after 30 days, your shout count is 30000, and if you don't post anything on the 31th day, your post count will keep on decreasing each day. If you posted 1K posts on the first day and 3K posts the second day, while you don't post anything for 2 days after 30 days have passed, your post count would become 26K...
Hope you understood.
Maybe you posted like 1000 posts in a single day for 2 days. After 30 days passed, those 1000 posts got deleted on 31st day, then again 1000 posts were removed on the 32th day.
they get deleted each day. Example, if you post 1000 posts today, and after 30 days, your shout count is 30000, and if you don't post anything on the 31th day, your post count will keep on decreasing each day. If you posted 1K posts on the first day and 3K posts the second day, while you don't post anything for 2 days after 30 days have passed, your post count would become 26K...
Hope you understood.
Maybe you posted like 1000 posts in a single day for 2 days. After 30 days passed, those 1000 posts got deleted on 31st day, then again 1000 posts were removed on the 32th day.