Can't verify app

[Rantan-art]

Hi, thank you for providing this app for free. I tried to get this app running on my IPad but it wont. I installed the app through Xcode from my MacBook on my iPad. I had to change the bundle identifier to successfully build the app (Xcode gave me an error message with the default value). Now that its installed on my IPad I trusted the developer in device settings but it wont let me verify the app. If I click verify app it starts something but with no result. For further information I use my Apple ID for the apple developer account but im not in the developer group (im not paying for it). Could that be the issue ? I was hoping that you as the developer have an idea what might be the problem and help me out.

Best regard

[Rantan-art]

After I rebooted my IPad I still could not verify the app under settings. But when I clicked on the app it just opened. So it works.
But how can I save data? There is no button and it does not ask if I want to save the data after recording. The trash bin seems to work.

[Rantan-art]

Ok, I found the files in the data folder. It works. Cool. Thank you.