Woocommerce - Paypal Integration without API-Keys / Multi-Site

Hi,

Is it possible to setup woocommerce with paypal, but without any API keys setting up in the site? I just want a very basic integration with woocommerce. I just need to know which orders/payments went through so that the status can switch automatically to "completed" instead of "pending/cancelled or on hold".

The paypal account is business account, and it must be possible that it can be configured for multiple sites.

Is there solution for that? Any references to read for that maybe? I would appreciate some help/answers in this. Thank you!

Without keys there is no way for your site to communicate back and forth from pp to you. You either take them offsite or use the keys to sync data... you can call pp tech # and ask them if they have a workaround but I doubt it gudluk