Hi Eugene, it would be great if you could test it.
I did some posts regarding this topic in another thread:
https://community.blynk.cc/t/beta-esp32-ble-initial-support/19908/8
IMO the IOS App needs to be fixed.
It would als be great, if you could improve your communication @ Blynk:
In the “[BETA] ESP32 BLE initial support”, vhymanskyy was asking for feedback and from his point of view "I tested it with Android only. iOS may work better, or fail completely! 
".
It would be great of getting BLE on the ESP32 & IOS working soon.
Thanks,
Janosch