Are those the level 70 set? There are 2 Captain crimson sets, a level 70 and one lower than 70, can’t remember and don’t have access to Diablo right now to check, want to say 40ish.
Sadly, the craftable sets weren’t retrospective to the changes made. I still have some ancient pre-2.6.6 lvl 70 captain crimson’s and aughild pieces that didn’t receive any changes either. You will have to find the recipe again and craft the new versions.
You really should read patch notes helps a lot in clearing these issues.
The following sets have been significantly revised from their existing level 70 counterparts. Items crafted prior to 2.6.6 will continue to exist in their old forms but will not be updated after the patch.
That’s straight from the notes regarding the changes to the crafted sets.
In addition, after the patch, the old recipes will no longer be available to craft and all players will need to re-acquire these recipes by finding the plans again through Horadric Caches or by killing Odious Collectors.
Guys, sorry I didn’t gave you enough information.
This is my seasonal char (S18) i’m a level 70 already, but it says the item is level 31 and display this bonus.
Do I have to get another recipe?
You have to craft new items. Old set items were not updated with the patch. Firstly, however, you need to find the Blacksmith Plans for the new items. Odious Collectors drop those and so do Bounty caches.
The old Captain Crimson set bonus is still available but they are a level 31 set. To Acquire the new set bonus you have to get the new plans which will unlock the level 70 Captain Crimson set.
The Old Captain Crimson sets you already have in your inventory will not change retroactively.