Same issue for me, it's quota capped at 5gb for another 5 hours - different browser didn't help, nor did getting a free acct/using their app etc. First mega download in months. I don't mind waiting the 5h, so it's fine for me - assuming they actually stick to thatworked fine on my end... try another browser maybe? copy the link an paste it in another browser.
Could probably reset one's IP to skip that wait as well.