OW-Ghost!
GDPR plugin is on the way, I'm working on it right now as fas as I can.
Matthias
You can choose not to add a credit card. Take a look at this: https://cloud.google.com/maps-platform/user-guide/pricing-changes/
"Even though your first $200 of monthly usage is free, all Google Cloud Platform services require a credit card and billing account, to cover any amount you spend over this free credit. If you are billed, we'll credit your account for the first $200 of monthly usage. If you choose not to add a billing account, there is a risk that if your usage exceeds $200 in a given month, your Maps API implementation will be degraded or other API requests will return an error. If your estimated usage will be above $200 a month and you don't have a credit or debit card to set up a billing account, a local Google Maps Partner may be able to help."
I don't know how how many requests it makes, you probably need to ask the developer of this map plugin or app if there is a way that this plugin displays the requests counter or something like that.
I'm gonna find out this too but not right now because I'm working in my own plugins and updates.
Senior Developer.