Monzo PayPal charges

You could ask for more information from the in-app chat, here on the forum from anyone who has been through the same process, or via help@monzo.com, but a quick search shows me:

I can say that in my yearly account change (switching from secondary accounts that have no active benefits, opening ones that do) it’s never dipped my credit score - but I wouldn’t say I’m an authority as I have never been through a mortgage process.