Payment error: Global Error Receipt

I have used WC Moneris Payment Gateway Plugin,
When i place order from wordpress website, It says “Payment Error: Global Error Receipt.”

I have followed this thread too.
https://www.ads-software.com/support/topic/error-encountered-while-integrating-moneris-plugin-payment-error-global-error/
plugin is already the newest version, and other plugin, wordpress all in new version.

Tried this also – https://community.moneris.com/blogs/b/announcements/posts/pci-compliance-amp-tls-1-0-retirement
added this line in mpgClass.php – “curl_setopt($ch, CURLOPT_SSLVERSION, 6 );”

Still not working, Could you help me.

Thanks.