We experienced this issue starting on August 29, 2024, with more complaints from clients following soon after. While the workaround mentioned here was temporary, the issue persisted. We escalated it to the Marketplace Support Team, and on September 11, 2024, they confirmed that the problem was resolved. They’ve disabled the hosting pre-check for all WHMCS subresellers, which should fix the issue..
If you're still facing this problem, I highly recommend contacting the Marketplace Support Team by opening a ticket. It looks like the root cause has been addressed, and with the pre-check disabled, the issue should now be resolved as it is for us.