Data Transfers · Problems and messages
What does “That account is refusing requests… it has hit a limit at its provider” mean?
Short answer: The cloud service is temporarily refusing requests because the account hit one of its limits. It usually clears by itself — try again later, and lower Parallel transfers if it keeps happening.
The cloud service is temporarily turning requests away because the account reached one of the service's own limits — usually too much activity in a short time, or a usage quota on your plan with them. It's on the provider's side and normally clears by itself.
Wait a while and try again. If it keeps happening, lower Parallel transfers for big jobs, avoid running several transfers to the same account at once, and check your plan's limits on the service's website.
Related: Parallel transfers · “Could not list folders”