After TRN said they'd recalculate ELO, 50% of my ELO is missing!

This website elo tracker said that they’ll recalculate elo. They said that there was an issue and it will take a few days. After one day of announcing that on their sit

e, approximately 50% of my ELO has disappeared. I go from being Diamond player in some game modes down to Silver. This is ridiculous so tell me something else is wrong. These new scores can’t be right. The attached shows an example of my Gambit elo just maybe a few weeks ago. now it has been dropped to Platinum and I have not touched it since I went diamond one.