The link does say,
"Is there anything I need to do right now?
If you receive a notification, you will need to register by the communicated deadline. This will ensure your business does not experience any disruptions after the deadline has passed."
There must be those who haven't given their bank details and they will be telt to register. You must have given at some point so you're okay but you can choose how offer you receive the payments from eBay.
I don't know if there's a default frequency but if you check the link, you can see the options.