Delve team of level -1 and lost of delve run

Platform, device version and operating system:
Android 8.0 with 4.6 update of game

Screenshot or image:

What you were expecting to happen, and what actually happened:
Doing a delve, enemy should be at level 210, but is at level -1

After the fight receive Server Error: CLIFFY-GJX5GEACH0 Restart Game

Delve run is lost.

How often does this happen? When did it begin happening?
First time happening now.

Steps to make it happen again
Launch a battle