Getting same, in PayPal dev site is said allow 3 hours time for update to take place…
I have tried several times to set up the Paypal social log in but I keep getting this error " V4.3.5
[background=#fed6d4]Relying Party Validation error: redirect_uri provided in the request does not match with the registered redirect_uri. Please check the request."[/size][/background]
I have tried several different redirect URL’s but no luck signing in.