Can't save Scenes

For the last couple of weeks I’m unable to create any Scenes. It lets me go through the process of picking an icon, naming it, selecting the bulbs and states, but after I click Save it says that it’s saved a new scene, but my scene list remains blank. Equally I was using IFTTT to trigger a scene on sunset, but that’s not happening any more. Can anybody help?

iOS or Android Yeelight own app?

I’ve now actually resolved this - I think it was because I had switched servers from Singapore to Germany (the recommended one). Once I’d signed out and changed back to Singapore the old ones have now reappeared and I can add new ones again!