A document says Held instead of processing.
In Rhodes: Processing, and Settings → Billing
The trial covers 100 documents in total, including anything you upload before adding a card. The limit doesn't reset during the 30-day trial, and the counter shown while you upload tells you where you stand.
Going over is never a wall. Every file is accepted and stored. Anything past 100 is marked Held — trial limit and processes as soon as you subscribe. You don't re-upload it and you don't lose it — a held document is already safely in Rhodes, just not read yet.
Once you reach 100, a banner says so and counts what's waiting: "Your trial's 100-document limit is reached. 12 documents are waiting. Subscribe to process them."
Adding a card starts the trial but doesn't lift the limit. To process held documents now, the owner can choose Subscribe now, which ends the trial and charges the card at once. Held documents then start processing immediately.
Three things never count against the allowance: the pieces of a split document (the original counts once), duplicates that were never filed, and documents still sitting held. Documents attached directly in chat do count, and a document still counts if it can't be read.
If a payment fails, processing is limited to 100 documents a month until the card is updated; the rest are held.