I was ready to post same thing, (again) over the weekend.
Went on Put.io, (just now) and find message: 'Sorry for slow downloads'. Storage servers problem. Our ISP needs to install 'new cable', which will take several days. We hope to resolve quickly.
Would expected Darrell Turner, pres. Puke.io to maybe keep us informed a bit better on this subject, since it started couple months ago, (Puke.io mentioned in forum, they might have a fix). But Puke.io site seems to be very slow in any activity of new developments/additions. Hope they are still carrying on with project. I understand 'time' for a new site is always needed.
For last 2 yrs, Put.io has had many problems, most corrected, some not. They are always courteous and return inquiry answers. But it does get to be annoying if you cannot use a 'paid' service.
I will see if this problem is corrected, and make a decision.