Couldn't find my application

i haven’t deleted my application but still it is not visible.

App id :
397DECC3-1C9E-9520-FFB1-608C4B7E9F00

Hello,

I suspect your app was in Backendless version 3. As you probably know, we removed the free plan in version 3 on November 1st, 2017. The apps on the free plan then were blocked and we gave two additional months (in addition to the 8 months with prior notices) for the developers to change the billing plan for their apps. Any apps which were not upgraded were removed from the system on January 5th, 2018.

We can restore your app, there is a $50 administration fee to start the process. If you would like to do that, please send an email to sales@backendless.com.

Regards,
Mark