[I need an advice I'm in the process of getting mega stones for mudkip, but when I hit the last pokemon, I keep getting out of the game. I think this is a game bug, please help me]

I have received all my supplies
And I thank you for helping me through these difficult days

[I need an advice I'm in the process of getting mega stones for mudkip, but when I hit the last pokemon, I keep getting out of the game. I think this is a game bug, please help me]

-sorry I can't have the video.But I'll tell you in detail
- after I did the quest to get into the Cursed Keystone I immediately engaged Spiritomp. But I couldn't complete it because I kept getting kicked out of the game. I gave up and wanted to get out but it was impossible without HM03 . After the maintenance on 2/8/2021 I entered the game but the result is still can't exit. Yes I'm like robinson on a deserted island and that makes me so sad
- I hope the game developer can help me with this
 Would like to thank

[I need an advice I'm in the process of getting mega stones for mudkip, but when I hit the last pokemon, I keep getting out of the game. I think this is a game bug, please help me]