I've been reading this thread and I just want to give support to everyone , as this is stressful and the IRCC agents don't necessarily understand the stress we go through for an education or even for work. Anyways, lets continue being patient. I received my biometrics validity letter today. I hope to get my Study permit extension soon. Down bellow is my timeline , I hope this helps someone , because I know your different timelines were a great help to me
My study permit expired March 31st 2020
Applied for extension on January 27th 2020
Biometrics done January 28th 2020
Biometrics correspondance letter April 30th 2020
I am currently waiting for my final decision , hope everything goes well , ill give an update as soon as I know.
Stay positive!