I finished level 902 after weeks of playing and got an error,why is it not going to next level??

I have been on level 902 for weeks because I have not be able to get a high enough score and finally got it this morning and as soon as it goes to page to share ( on facebook on my laptop) it comes up with error and I reload page and now level is showing as I have not passed it. How can this be fixed???? I am very frustrated after so long and finally getting past it then to have it error is so annoying! HELP!!!