So when locking Radiant Power it shifts my weapon to a 600 ilvl exact copy over the 626 one I have. I do not know why and it also does not show locked even though it is until I turn enchants to none again.
You have the optimiser set to Tier 3 Enchants but have used a Tier 2.
The recommendation is to use a Tier 3 “Stormrider’s Fury” (as <1% better), but if I configure the Optimiser to Tier 2 Enchants, it is happy to accept your choice.
I don’t claim my observation to be “the answer” and defer to @yellowfive &/or @Swol, for more credible appraisal.
eighjan is on the right track here. You actually do have the tier 2 enchant locked on your 626 version of the weapon. You can equip it manually to unlock the enchant on just that weapon. Or, use the “unlock all” button to get rid of all locks.
Also, you have set a custom secondary stat distribution that is trying to force the optimizer to get a lot of haste. This gives even more value to the higher tier haste enchant.