Apple's Files App is unable to connect to your Time Capsule from your iPad, but FileBrowser will save the day. Follow our simple step by step guide below and we will have you connected in no time.
In FileBrowser tap the "+" to add a new machine, now tap "Time Capsule".
Enter the name of the Time Capsule under "Computer Name" and enter your "Username" and "Password" tap "Save".
Now select your Time Capsule from the list of locations in the left.