This is what worked for me:
- Close Black Desert Mobile app
- Turn Internet / WiFi off on your device
- Open Black Desert Mobile
- Wait for the message can't connect to server
- After a few seconds turn on Internet/WiFi on your device
- Press "Retry" to connect to server
Same issue on iphone and ipad. deleted/reinstalled on both devises. restarted both devices. App will not open at all.
I want 200k shak coins, 500k silver, and full JIN gear as compensation for my inconvenience. just put in my mailbox when you get a chance after issue fixed please.