You got level 1 slots via Charactermancer? That never happened to my Warlock. The OGL sheet is not set up very well for Warlocks and the spell slot thing does not work automatically, in my experience. Initially, I set my level 1 slots in the gear tab of the sheet in the Spell slot modifiers at the bottom of the left most coloumn. But, either my sheet bugged out or something but when I went to change the spell slots from 1st level to 2nd level, the 1st level would not go away. What I did was go into the Attributes and Abilities tab and under Attributes look for lvl1_slots_total, lvl2_slots_total, etc and zero out the lvl1 slots attribute and add 2 to the lvl2 field.