Can I stop later?

Yes, at any time, from My home → Reporting. You choose whether what was already reported stays or is removed.

From the guide Rent-Payment Credit Reporting.

When a month cannot be reported (on-time payments only)

A month paid late, paid in a way Seayora cannot verify or still unpaid is left out, and the resident is told. Because only positive months are sent, an account with two such months in a row is removed from TransUnion entirely rather than left showing a gap — and so is an account where a payment Seayora reported is later returned or reversed. Paying on time again starts a fresh account.

Read the whole guide: Rent-Payment Credit Reporting

More questions about Rent-Payment Credit Reporting