The following issue is currently occurring in the game.
After updating to Ver. 2.21.0, Mission Completion Rewards cannot be collected even if all daily missions are completed.
Note: This issue will not occur if you have not updated to Ver. 2.21.0.
Since May 25, 2022 at 11:00 p.m.
We plan to resolve this issue after May 27, 2022 at 11:00 p.m.
We are currently planning compensation for the inconvenience caused.
We sincerely regret any inconvenience caused.
We hope you continue to enjoy Pokémon Masters EX.
Source: Official Pokémon Masters EX site