365 Groups can't receive mails from power automate

[TW001]

I created a flow of "send an email notification" in Power Automate.

Then set 365 group mail address as receiver.

But this address can't receive the mail from  microsoft "at" powerapps.com.

I've already set “let people outside the organization email the groups” as TRUE.

Anyone can tell me how to solve this issue? Thanks.

[#2]

What does a message trace against one such message show? https://docs.microsoft.com/en-us/exchange/monitoring/trace-an-email-message/message-trace-modern-eac
Are you sending to the primary address of the group or any secondary?