Depending on what rank your modifer is you might have to use a lot of refresh to get the value to go up. Since your crit value is 13 then the modifer rank is 2 which means if you use a refresh stone it will reroll the modifer between 11-15% i believe and since its a 13 you have a 50% chance for the modifer to go up or down if it rerolls a lower value nothing will happen
Thank you that helps a lot!
No problem, also the level and rank of stones have no affect currently. Devs have confirmed
It would say anyway that 'nothing change since current stat is higher' or something like that
also, if possible, explain how Regenerate and Refresh Stones differ from each other