Eric the Strongheart

i am having trouble with my spells no matter what i do i can not memorize 9th level spells, for my druid i have his wisdom currently at 18 and will increase it to 19 on my next chance, have 9th level spells availabel but no where to put them i did choose extend and persistant spell feats but I have played on servers where this did not matter. not sure what to do please give me any ideas as to what to turn off or turn on