God's sovereignty in relation to sin and Satan is a difficult topic. However we understand and teach it, we must take great care not to throw doubt on God's honesty, or His promises in the Bible.
Some there are, for instance, who preach that God can have two opposing wills -- one in the Bible, then a completely reversed one in eternity. This is a confused attempt to harmonize differing truths about God, and ends up being fatal to faith because of how the confusion undermines God's honesty.
However we doctrinally understand God's sovereignty and how He relates to sin and Satan, we must not end up making God dishonest, or that we can't trust His word. Both of those ideas come from the devil! Those are red flags that let us know we have made a serious mistake.