How can I do this? Stupid me bought a 8 spot scouter for 40 mill and its power is to low. I searched the forum and found nothing.

Higher the level. higher the wattage.

every lvl of scouter, the scouter power will increase. ex: lv 1 = power limit 50, lv58 = power limit 770, lv60 = power limit 820.
*for lvl 60, u only got from mudosa machine cl-60 (like lvl 1 scouter model) or from npc in tourney map (model like candy, and has 8 slots)

The scouter I got was level 50, I will need a level 60 scouter then correct?

correct.