All Functions are not working properly

Maybe you have some error that Lectora is not catching. Do you have a javascript error - yellow triangle in lower right corner (status bar) of the browser window?

Can you post a version of the problem page in the Files section of the Lounge? In Lectora, use the File menu > Export > Zip to get the file you need. Then post here that you have uploaded that file. If it is very big, suggest you make a copy of the course and eliminate unnecessary pages before uploading.