WOW I’ve just got news from you even tough I’ve been using Expo for long time! Thank you!

Also, I do feel free to pay for $29 if expo gives me good experience in fcm notification and bluetooth. Currently I don’t feel reliable.

However, I am keep monitoring them so that they can handle above (for fcm, need better experience). Because I know if it fulfils my requirement, I have no question on using Expo!