I know this would require programming for a new payment processor, but have you considered Yourpay.com? They provide recurring payment functionality...
Could they be better to focus on? Though it took me 2 weeks to get a sales person to even kinda help and even then it only worked because we used a reseller who was very
I've had the same experience with their sandbox, both testing CiviCRM and other ecommerce tools. It's incredibly unreliable.
I complained enough to tech support (which is another topic to rant on) that their most recent response included this info:
due to the issues we experience with sandbox, I recommend to just use beta sandbox for now.
Bear in mind that you will need to create a Beta Developer Central account as well as Beta Sandbox PayPal accounts.
The URL to the Beta Developer Central is: https://beta-developer.paypal.com/
The URL for the Beta Sandbox is: https://www.beta-sandbox.paypal.com/
I have not had a chance to actually check it out yet, but it would appear they're in the process of building a new sandbox, which is usable to some degree. You might want to try it and see if you get better luck.
PayPal Sandbox has sucked for a long time. I remember trying to develop a donation tool with sandbox about 4 years ago, and performance was so slow you couldn't tell whether your script was working or not. You think this would be a top priority for them.
Paypal's sandbox makes me want to cry in 2011. How could they degrade their service to produce a page with only the words "Fatal Failure" or other pages with 500 Internal Server Errors. If it weren't for my customer I would use something else.