I like the top flap overlapping the bottom (in #7) much better than in #5 and #6. Less contrast on the edges would be nice. in #7, it's easy to tell that the key hole is a lock.
I liked in #26 how the outer frame was removed and colors having less contrast. What would it look like if the dark blue matched the dark blue on our current website - https://www.protectedtrust.com/ - RGB #485063 - and the other blues lighter shades of the same?
I was wondering what a design might look like if it was just three small squares above the P in #28. Perhaps enhanced a bit, but something basic and simple abstract mark.