Response Code 97 indicates that the transaction fingerprint created to authenticate a Simple Integration Method (SIM) transaction has expired. This error is received when the timestamp value submitted in x_fp_timestamp is either 15 minutes ahead, or 15 minutes behind in Greenwich Mean Time (GMT) (this is the equivalent of 900 seconds ahead or 900 seconds behind in Coordinated Universal Time, or UTC).
{{errorMsg}}
This troubleshooting tool validates whether the value you submitted to Authorize.net for x_fp_timestamp is a valid timestamp. Valid timestamps must be formatted in UTC, which is the number of seconds since 12 AM, January 1, 1970.
To troubleshoot a Response Code 97, check the following:
Authorize.net server time is : {{ourTime}}
Your server time is : {{yourTime}}
The difference is : {{timeDifference}}
It looks like your web server is quite a bit out of sync with UTC. Check out this article on NTP: https://en.wikipedia.org/wiki/Network_Time_Protocol. If you do not have access to your servers then contact your hosting provider about synchronizing their servers. The least preferred option would be to introduce an offset to your fingerprint generation code, based on the time difference we have indicated.
The difference is : {{timeDifference}}
Your time stamp is within the 15 minute window, it doesn't look like that's the problem here.