Paypal Error "We were unable to decrypt the certificate id" when use paypal URL

Hi There
i’ve a problem with paypal payment.
The error I receive is We were unable to decrypt the certificate id after redirection to paypal.

I’ve noticed that url generated from s2member is very long and it seems truncated by webbrowser after redirection and anyway it seems modded on special characters as / and + and so on…

If i use paypal button it works flawlessly.

let see it

paypal button on form input:
-----BEGIN PKCS7-----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…UxDxcNMTcwNTE4MDcxNzUwWjAjBgkqhkiG9w0BCQQxFgQUdBYimIwzWmU5kVelujsyPhwmOtIwDQYJKoZIhvcNAQEBBQAEgYASSbobWx3eY2NZwobZ7OKF9LaI01AM7mqa1gvVFiSuydQP11wRPHIOEcd/wlUqd+2jsXVvgntLWQfsZdpp57MiIsNMQJKjukyIPOGm79+QTTi1As1yDzCXXxJdfekzTk7yK9nP3oikvA5bsWpVLhGbSbgcB1nNh8bYgQxmJEcOiw==-----END PKCS7-----

link (visible on browser url) after paypal redirection
-----BEGIN+PKCS7-----MIILAQYJKoZIhvcNAQcEoIIK8jCCCu4CAQExggEwMIIBLAIBADCBlDCBjjELMAkGA1UEBhMCVVMxCzAJBgNVBAgTAkNBMRYwFAYDVQQHEw1Nb3VudGFpbiBWaWV3MRQwEgYDVQQKEwtQYXlQYWwgSW5jLjETMBEGA1UECxQKbGl2ZV9jZXJ0czERMA8GA1UEAxQIbGl2ZV9hcGkxHDAaBgkqhkiG9w0BCQEWDXJlQHBheXBhbC5jb20CAQAwDQYJKoZIhvcNAQEBBQAEgYBD9W3lKBUKwI8k8RiDPYhFTEzznfVX5OmxoBeQw30xOGgHaEbtdXJGWP%2BhyGCM9MweD4fO0u19YBpMbAf3SDTxDlob%2Fs3dFnYOqa82oc8KGwjCi4wPYJOdfCONh3YIDFrSbnvAOBFt3fZnD58M081%2Bbf4mWNTGzeS9Ddxia3HnuzELMAkGBSsOAwIaBQAwggR9BgkqhkiG9w0BBwEwFAYIKoZIhvcNAwcECHSP2lNoGIyngIIEWJ%2FYa9HBApXmt3YPneTYQ%2FbgJcKyyMVTjK41tL%2BO%2BhTdQAv%2FMw%2B0qUMKrr3odKDg%2BZxccidJ7rIhylzTEiDQQ76fj9h8LuZKTnRXtuXCeSid1%2FYNO9oRWNJq%2BpXJBOKP4CkZ22w%2BdCC3vSYFJe3scElD%2Fkl4%2F8yszJ%2BqDUeLxnFo8BcNKcsX%2FZewgjPW%2FiKto2A61f8bRXrqcyk98NEkPi%2FOdPQJhlTXVcRXdsETJnw62oLFL%2BWqUEvZz7aS17EdHizNkT%2FHhC4F5%2BllfHKtXULIO%2FMgAK4ALS89U8z3%2Bao4F9miiH2A512yUlKOWk9VFBWquIxlN4NuwYT415ZefvPOq4wGslA87EStXp%2FoascBTvdaJC2Y6Ta

Can someone Help me?