Quotas, what happens when a grant expires, common errors
You probably don't have a pylon allocation.
Access to pylon storage is not automatically given with allocations. Typically this occurs when you have been added to an existing allocation. The PI must specifically request that additional users being added to a grant also get a pylon allocation.
Ask your PI to double check that a pylon allocation was requested for you.
Three months after your grant expires all of your Bridges files associated with that grant will be deleted, no matter which file space they are in. You will be able to login during this 3-month period to transfer files, but you will not be able to run jobs or create new files.