Howdy Ben,
I would love to help you find a solution for this.
Have you ever adjusted the “Hold Stock” setting before? According to WooCommerce enabling this will cause the default 10080 minute to be enacted. Then Woo will show that error message. More info here.
To adjust the error message you will need to either change your WooCommerce settings or modify WooCommerce itself. You could for example lower the wait period in WooCommerce, or just disable Hold Stock entirely if this is not your desired behavior.
Does that all make sense? Will that work for you? Please let me know.
Cheers!
– Brook