If you have a payment method set, your Earnings page will show the following message:
For your security, you must contact support in order to update or change your current payment information.
This isn't an error message, and no special action is required on your end! This is just a message telling you what to do if you want to change your payment method on MV.
If you don't want to change anything, you can just ignore the message. Otherwise, you can find all the steps you need to follow here: How do I add or update my payment method?