New levels mysteriously disappeared

I finished level 535 but was “stuck” for about five days because there were no new levels available to play. I performed the latest update this morning and everything went well. I opened the game, saw new levels and played a few. I completed level 540 and decided to close the game to take a break for just a couple of minutes. I returned to the game and to my astonishment my avatar is back on level 535 and all the new levels have vanished. I did not take a screenshot of the board with the new levels because I never imagined this would happen. I am not even sure if I encountered one or two hard levels along the way and have no wish to replay those levels because I would have to rely on boosters and gold bars to pass. Please fix. Thank you.