After you registered on retail7.io, a contract is created. Here you can see the contracts that have been signed with RETAIL7.
The contract(s) are available in PDF format via the Download function.
Also, your contract can be Terminated here. When you decide on termination, just click on the Terminate contract link. Then, a query must be confirmed in advance, that the contract is really to be terminated. This query appears for security reasons, so that the contract should not be cancelled by mistake.
Note: if the contract expires (for example by termination), all your business data should be downloaded previously, because when the contract termination is executed, your own RETAIL7 system and all associated data is deleted.