Fortunately, it did not take too long for all to be solved.
What did I do? I left the blanked Evernote open and running. After 50 minutes, my long note from yesterday was uploaded to the cloud so I could access it normally. Also, after leaving the program on its own for a while (I guess a couple of hours), I plugged the computer out of the battery suddenly. When I turned my computer on again, the program was running smoothly. All of this happened on the same day. So, I just kept doing my work!
Thanks all!
