OnkelPaschulke

Hi folks, first post and first problem... I just finished building the TKTalkie V3 and I had troubles with the app. I couldn't get a connection. So I upgraded to V4 but I still have the same problem. Im using an iPhone SE with iOs 13.5.1. According to the iPhone there is an active connection withe TKTalkie because it's listed as paired and the LED on the BLE Modul is not blinking anymore. I checked the wires twice and they are connected correct. Im using a HM-10 Module with the CC2541 chip. Does anybody has an idea?! The rest seems to work find. It's just the bluetooth connection...