We are in the final stages of testing the fix, which will grab everyone who completed crafting between update 4.1 release and when the achievement was released (4th).
The Goal that has been reset will update to match any crafting that has been completed in that time. If it’s enough to trigger the Goal, it’s marked as completed again and you can collect the reward a second time.
The platform achievement/trophy, if you do not already have it, will not auto-trigger. You will then need to go in and tap on the Goal (possibly multiple times) to push the trigger.
This will all likely go out tomorrow or within 48 hours!