https://legacy.forums.gravityhelp.com/topic/the-link-you-have-used-to-enter-the-paypal-system-is-invalid-sandbox-issue Gravity Support Forums Topic: The link you have used to enter the PayPal system is invalid. Sandbox issue? en-US Mon, 20 Apr 2026 12:07:26 +0000 http://bbpress.org/?v=1.0.1 q https://legacy.forums.gravityhelp.com/search.php https://legacy.forums.gravityhelp.com/topic/the-link-you-have-used-to-enter-the-paypal-system-is-invalid-sandbox-issue#post-39702 Wed, 02 Nov 2011 12:49:03 +0000 Chris Hajer 39702@https://legacy.forums.gravityhelp.com/ <p>Very good. Thanks for the update. It's baffling sometimes when you're testing, but I'm glad it's OK for you. </p> https://legacy.forums.gravityhelp.com/topic/the-link-you-have-used-to-enter-the-paypal-system-is-invalid-sandbox-issue#post-39650 Wed, 02 Nov 2011 09:16:17 +0000 MINIMIZO 39650@https://legacy.forums.gravityhelp.com/ <p>Hello. Thanks. I contact with PayPal support and they test the form: its ok. Seems only a Sandbox issue. Thanks Chris. </p> https://legacy.forums.gravityhelp.com/topic/the-link-you-have-used-to-enter-the-paypal-system-is-invalid-sandbox-issue#post-39311 Sat, 29 Oct 2011 14:12:08 +0000 Chris Hajer 39311@https://legacy.forums.gravityhelp.com/ <p>It's a configuration issue with the sandbox details. It's not a common problem. Be sure you have the correct email address in your PayPal setup in Gravity Forms. </p> <p>Please post a link to your form if you would like us to test it out. Also, try from a completely different browser to be sure you're not already logged in to PayPal or something. </p> https://legacy.forums.gravityhelp.com/topic/the-link-you-have-used-to-enter-the-paypal-system-is-invalid-sandbox-issue#post-39293 Sat, 29 Oct 2011 06:37:55 +0000 MINIMIZO 39293@https://legacy.forums.gravityhelp.com/ <p>Hello. I try the sandbox before launch the form in the "real life". But when i am going to (sandbox) pay, Paypal give me this message:</p> <p>The link you have used to enter the PayPal system is invalid. Please review the link and try again.</p> <p>and a botton: return to merchant. If you click at this botton, you will go to "Canceled Page".</p> <p>I am trying a annual subscription. I read at google that its a sandbox issue, but in real transactions all is ok. Do you have any notice about this? </p>