Since I did this post for a DM, I may as well share it for anyone still unsure about the MEGA workaround:
Here's a video of me extending the download.
You can see on the left that the quota has expired and it says I have to wait for another 47 minutes. I right clicked the MEGASync tray icon and brought up the transfer manager with the download paused, and you can see Winscribe running. Once I start Winscribe, after few seconds you can see the download begins. Then I stop Winscribe, after a few seconds it stops and then it starts again. It'll be good for another 2 GB. That should be all that there is to it.
View attachment 1498212