Unable to open cloud and older files, and is facing sync issues in XD

Hi @HARSHIKA_VERMA @Madhumati chitapur 
I have tried each and every step from the article even before I created this post. The issue is with the older files that show the grey cloud icons. They have to be opened. And they keep loading until I have to do a force quit. But once clicked, The grey cloud Icon changes and blue syncing process gets initiated. It takes about 1 hour sometimes to get these files fully synced- showing the green icon. Now I have files from about last two years. I have been clicking each of these, waiting them to open. Then quitting and restarting. After about half an hour or few hours I have to click on them again to be able to open them.  I have attached screenshots in previos post. I have been wasting hours to recover these files. They are recoverable but I am assuming, with subsequent updates, older files never synced even though they are in cloud. When I am trying to open them now, they initiate a new sync process. This is harrowing and should not have happened. I have still about 30 files with the online only grey cloud icon. I would appreciate someone to come up with a solution for this. Thank you for reaching out.

Attaching a screen shot again of the grey non synced files. These wont open at first go as explained. SOmetimes not even at 2nd or third attempt. While they are loading I am unable to access home menu. that way I have no option but to hit force quit so I can start again. I have now force quit XD atleast 20 times in the day. Thoroughly fed up.