The setup is really simple from our side.
Simply go to Settings -> Payment methods, click on "Add New Payment
Method" button in the left top corner of the page. Then select "Paypal
Standard" or "Paypal Express checkout" from the "Payment Method" drop
down list. Set t title for your payment option in the "Method Title"
field. You can customize the messages showed to your customers below
that. An on the very bottom of the page, there is a field for your
paypal email.
If you're not sure what there difference between those two is, please have a look here.
Once you're done you will need to add some settings on your Paypal account. Namely:
Grant your API authentication permission:
Log in to your paypal account and go to Profile -> More Options ->
my selling Tools on the left hand side. Under "Selling online" click
"update" on the "API access" line. Click on "Grant API permission" under
option 1 and paste "support_api1.ashop.com.au" in the 'Third Party
Permission Username' field. Check 'Use Express Checkout to process
payments' check box. Click the Add button.
Note: You may check additional boxes, however be aware that some
functionality may not be available on or related to your checkout
process.
Set up IPN (instant payment Notification) from PayPal website:
Log in to your paypal account and follow the link below.
https://www.paypal.com/au/cgi-bin/webscr?cmd=_profile-ipn-notify-edit
Once the page opens, paste the following line in the "Notification URL" field.
https://secure.ashop.com.au/checkout_paypal_IPN.asp
Check the radio button titled "Receive IPN messages (Enabled)" and save.