You can, of course, choose the effective date of your Lovys contract when you subscribe and therefore the future withdrawal dates.
For that, nothing could be simpler than to make an estimate, then go to step 2, to choose the desired date.
Once the desired effective date has been indicated, it is on this same date that payments will be made (for example every 7th of the month). Also, you must proceed to the payment of your first contribution as soon as your contract is validated, and the next debit will take place before the start of the second month.
?You subscribe on June 15 for the contract to take effect on July 1. You will pay your first membership fee on June 15 and the next payment will be on July 31.