The notification was disabled temporarily. You did get acorns for any submissions you made during this time.
I checked the logs and I see many references to acorns being given to you today.
Here are my recent log files:
Gave acorn to Newyorkrita for image
Gave acorn to Newyorkrita for image
Gave acorn to Newyorkrita for image
Gave acorn to Newyorkrita for image
Gave acorn to Newyorkrita for image
Gave acorn to Newyorkrita for image
Gave acorn to Newyorkrita for image
Gave acorn to Newyorkrita for image
Gave acorn to Newyorkrita for image
Gave acorn to Newyorkrita for image