I have an android device and just complited my national pokedex yesturday. after transfering the last pokemon from my sword game to finish the dex. I saved and exit the pokemon home app on the switch. The a coule of minutes later I open pokemon home in my android phone. I got two errors I forgot to write them down so I dont know what they were, but after the second error the app open thats when i check my gift boxed and I didnt have the magearna eather.also i check my recent transfer pokemon and aroun more than 10 were deleted. including some I transfer to complete my dex. If i check the pokedex those pokemon that got deleted are showing as register so my dex is at 890.
I was able to complete the unown challange i see that completetd.