Recent issue with WHMCS Multisite Provisioning

For months everything has been working great between my WHMCS and WHMCS Multisite Provisioning, however over the past week, whenever I place a new order, and go to create the order, the site is still created on my WordPress installation, but the order cannot be 'activated' and the following error is given:
Order Accept Encountered Problems
Invalid data or no response: The receiving plugin may not be activated at: http://www.agentfire.com"

Again, this is despite the site actually getting created on my main WordPress installation. I read a bunch of other threads here and am also attaching an SS of my Module Log (censoring out sensititve account data)

Again, this is a recent issue, I'm not sure what it stems from :slight_frown: Please let me know if I can provide any additional information. Thanks!