If you’re getting a blank page when redirected to the Membership Options / Redirect Page, when returning from the payment gateway, or some other long URL, you may be getting a 414 error: Request URI too long. (more information here - http://www.checkupdown.com/status/E414.html )
What you need to do is contact your webhost so they raise the limit for your website/account. OptimizeMember has a few URLs that can be quite long, and you need these to work or you’ll have trouble with some checkouts or redirections.
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