HI developer is trying to test the plugin and even if the settings is marked as sandbox the plugin is sending to live paypal url.
Here is his comments
I have installed Fundraising Plugin! and select the payment mode for Paypal to "Sandbox".
Now it is always redirecting me to live paypal url.
I also set the paypal email.Create new fundraiser configure this successfully.
Only issue is this it is not working on sandbox.
Please suggest some idea or guide line to achieve this ASAP.