In LettsPay, you can edit a landlord in two different ways:
From the landlords list:
Click wallets on the side menu
Click the landlords tab on the right hand side of the page
Find the relevant landlord
Click actions
Click edit

From the wallet view page:
Click wallets on the side menu
Find the relevant wallet
Click actions
Select view
Click the actions button on the right hand side of the relevant landlord in the landlords tab

Please remember that LettsPay uses the landlord’s details to generate their payment statement.
Therefore, if you want to change the details shown on a payment statement, you should edit the landlord and not the wallet.