🛑Why my shopify order shows in "hold"?

This is due to Shopify, and can be due to different reasons.

The reason why an order was put on hold is shown on the order in your Shopify admin.

In this link you can find the explanation of the different motives. Here's a quick summary of them.

High risk of fraud : The hold order based on risk level flow placed the fulfillment request on hold, or the High risk of fraud reason was selected when the order was manually placed on hold. To request SFN fulfill the order, manually release the hold, and then manually request fulfillment.

Inventory out of stock : The Inventory out of stock reason was selected when the order was manually placed on hold. To request SFN fulfill the order, manually release the hold, and then manually request fulfillment.

Address incorrect : The Address incorrect reason was selected when the order was manually placed on hold. To request SFN fulfill the order, manually release the hold, and then manually request fulfillment

Awaiting payment : The Awaiting payment reason was selected when the order was manually placed on hold. To request SFN fulfill the order, manually release the hold, and then manually request fulfillment

Other : The hold order based on order value flow placed the fulfillment request on hold, or the Other reason was selected when the order was manually placed on hold. To request SFN fulfill the order, manually release the hold, and then manually request fulfillment