Overmelding

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Hey guys I am having trouble with my melds.. I have 2 Atheryte rings, (Atheryte A and Atheryte B). Atheryte ring A has 3 melds (compentance II, command III, command I) and Atheryte ring B has 2 melds (Command III, Cunning III). I am trying to put a 3rd materia into Atheryte ring B but it says i cannot affix anymore materia into the item. That weird because i clearly have 3 materia in the other ring which is the exact same, both are HQ.

I had a guildy origanal put the materia in there, then i logged of for the day and tried to have my friend do it who is also a lvl 50 Goldsmith but thats when i got this error message, so i tried having a different guildy (a differnt one than from the first) try to meld my materia but it kept giving me the same error message D:

Any help would be much appreciated!

P.S. I also cannot meld more than 1 materia into my HQ: Red Coral Earings, Electrum Choker, Militia Wristlets.