Fixed2
For a large credit-paid file, the deposit shown before you pay is now the whole file's hold, not one piece's.
A large file is uploaded in pieces and the deposit you chose is held once per piece, but the screen added it once per file, so an account holding exactly the shown amount could run out in the middle of the file. The row now shows the total and a line under the control says what each piece holds. Nothing changed in what is charged.
A large credit-paid upload interrupted while a piece was being reserved can now resume; before, that piece could never finish.
If the tab closed between asking the pool to register a piece and hearing back, the resume encrypted the piece again with a new key, so the bytes no longer matched the registration and every retry failed silently. The resume now reuses the saved header, and a mismatch is refused with a message before any bytes are sent.