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Another issue being reported to me is when people try to sign up, they get this error message (how in the world do I fix this?):

[ roadguardians.org ] says…
ERROR: Unable to verify
$_POST
vars.
Please contact Support for assistance.

This is most likely related to an invalid configuration of s2Member, or a problem with server compatibility. If you are the site owner, and you're absolutely SURE that your configuration is valid, you may want to run some tests on your server, just to be sure
$_POST
variables are populated, and that your server is able to connect/communicate with your Payment Gateway over an HTTPS connection.

s2Member uses the
WP_Http
class for remote connections; which will try to use
cURL
first, and then fall back on the
FOPEN
method when
cURL
is not available. On a Windows® server, you may have to disable your
cURL
extension; and instead, set
allow_url_fopen = yes
in your php.ini file. The
cURL
extension (usually) does NOT support SSL connections on a Windows® server.

Please see this thread for details regarding the ideal server configuration for s2Member.
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If you need assistance, please contact support.

I'm contacting support like it says, and getting nowhere but out of a job. Please, please respond to this! Really regretting the purchase at this time. Anything but smooth.

Sorry I didn't see this post yesterday.

Did you do the server tests for cURL and allow_url_fopen as suggested in the error message? viewtopic.php?f=36&t=2636#p7577

Also, please enable logging and try the purchase again, if you get any errors, post here the log entries for that transaction, x'ing out any private info. WP Admin -> s2Member -> PayPal Options -> Account Details -> Enable Logging

I hope that helps.

Thank you, Cristián! I can't get the allow_url_fopen to work. I created a file title "php.ini" and saved it with the line of code. cURL works fine.

Would this also affect Specific Post/Page? Because that's not working correctly, either. Customers are paying but do not get access to that page, and receive an email like this:
Thanks %first_name%!

%item_name%

Your order can be retrieved here:
%sp_access_url%
( link expires in %sp_access_exp% )

If you have any trouble, please feel free to contact us.

Best Regards,
roadguardians.org

The problem about the email is caused by an old version of s2Member that had this problem.
Could you please replace everything between the percent signs (%) with two percent signs on each side(%%), thanks.