Posts appearing in a jumbled order in the published course, making it pretty useless. Any ideas how to fix it? No response from Apple Support in 72 hrs.

I have created several course before with no problem but in this one the posts appear in the actual course in a jumbled order. This makes it pretty useless. Have tried a duplicate course, this was even more jumbled. Any ideas how to fix it? No response from Apple Support in 72 hrs.