Items that are in "Pending, awaiting payment verification"

Sell On Amazon Order Management, Shipping, Feedback & Returns
1

Will these sales get cancelled once 3-4 weeks is up or does the order need to be cancelled by the buyer?

Will the item automatically go back into my inventory and be sellable again, right?

Is there a way to track this easily?

I’ve 20+ orders that are in the 3 week range of pending, I want to make sure all the items are added back to my inventory.

2

I think Seller Tool kit will help with this. STK will ensure that all sellers know exactly where all of their stock is placed by using the STK Reconciliation feature