[mme42]

For the first user, I'm not sure what you mean about the pic. It almost sounds like you just need check your settings for rep power and update the counters so that all users have enough rep to give others rep. Maybe you should explain more before trying anything.

If you do need to reset or delete rep, you could use an sql query to do this. But, if you try, make sure that you do a database backup first. You could update users to a certain amount of rep with:

UPDATE user set reputation = x;

(Replace x with the number that you'd like to reset to. If you use a table prefix make sure to add it to the beginning of "user")

Or you could delete all reputation with:

DELETE FROM reputation;

(Add your table prefix to the beginning of "reputation" if you use one)

Then after running either of these, you'd probably want to go to admincp > maintenance > update counters > rebuild user reputation.

But, be careful. And, like I said, make a db backup first.