I used the free DropBox very happily for all my personal info for several years until a few months ago. One particular day I needed immediate access to an especially critical file. Without warning DP denied access to my folders and demanded an immediate subscription because I had exceeded a (previously undeclared) limit to the number of devices connected to my account. In effect DropBox held me to ransom for money to access my own file. I was furious. Revenge is a dish best served cold. I have now moved all my data from DB and onto Apple iCloud storage and am about to close my DB account for ever. This company deserves to go bust for their customer treatment.
