Not sure if there is an updated thread on this, but this is the link for Bulk Reef Supply to do the exchange. Tropic Marin posted on their Instagram today to go through your retailer to complete the return. They just need a picture of the Turkey label on each box +/- the lot number if you have it.
https://share.hsforms.com/1pcBQvTcCT0yN3g6mTLg0Fg3mlb1
https://share.hsforms.com/1pcBQvTcCT0yN3g6mTLg0Fg3mlb1