Same here, no solution
We are just gamers not affiliated with league of war staff, I played league of war multiple times only encountering minor technical problems.
1.Too many Apps: Having too many apps running could cause reduction in frame rate and possible crashes depending on how many apps you own.
2.Type of device: The type of device you have like android and iPhone may have varying optimization issues.
Ive been getting that black screen every now and then since i installed the game a few weeks ago. Usually, i just wait a few minutes to an hour either turning off my ipad or playing another app and it goes away. Today however, its been black since i tried to log on in the morning. (About 12 hours now). I tried closing and restarting and even reinstalling, neither have worked. It simply goes to the screen where the engineer guy is and then turns black a few seconds later. I really dont want to miss my daily draw and would like to put up more points on this weeks invasion event but I cant. This is very frustrating :/