Your contract takes effect as soon as you sign it electronically, provided that the first bank payment has been received.
To terminate your contract, you must make a full withdrawal from your portfolio from your customer area (see the question "How do I withdraw money?"), and then notify Birdee - 77-79 Parc d'Activités Capellen - 8308 Mamer - of your intention to terminate by registered mail.
The cancellation will become effective when you have received all your management and tax reports.