Unfortunately you have lost your project if you did not make a backup. But at least you can create another similar project and replace it with your version published in PlayStore, since they keep the same Keystore for your entire account. (also make a security copy from the Keystore)
Can you can get the history of the app in your browser history?(Its will be hard if you opened several projects because in history it shows as creator.kodular.io for all projects,and you have to open and see all) If you get, try to open that and if you are lucky you can find project id in the url.
First of all tell me how it got accidentally deleted coz you need to type the name of the app before deleting it.
Kindly contact Kodular Staff regarding this matter.
I’m really sorry if you are not able to recover it, I would highly reccomend to backup all the current and future files so that you won’t get into hot water next time.
Check the date on which I delete it and check the links that have the 16-digit code corresponding to a deleted project, it is easy because the project will not open. Send that code to Diego assuming it was the only project I deleted?
Luck. And I recommend that you be more cautious or nobody will take you seriously …