These people accept money to complete content on other people's accounts.
This creates an unfair system, unfair play, and unfair competition between players. Sometimes they do this on stream and cover the other person's account name with a photo so that the player who gained an unfair advantage cannot be reported.
They complete a lot of content outside of streams so as not to draw attention to the unfair play on other people's accounts for money. This violates Kabam's rules.
Why haven't these people's accounts been banned yet? Is there an agreement between Kabam and the streamers not to ban?
Also, these people regularly use other people's accounts to open crystals in videos. This does not create unfair competition, but it violates the rules of use of accounts.
Streamers sell services to complete/exploration content on other people's accounts on their social networks and private messages. But you can somehow verify this using the account data.
Here are some of the streamers violating fair play:
RomVite -
https://www.youtube.com/@romvite6340 
https://www.youtube.com/watch?v=uPcdHJDPFgc (Streamer's personal account) (Seen in the player's account name)
https://www.youtube.com/watch?v=dddQlk-pYHU (Opening crystals on someone else's account) (Seen in the player's account name)
https://www.youtube.com/watch?v=I--XR2rTCuQ (Opening crystals on someone else's account) (Seen in the player's account name)
Noob Club Marvel -
https://www.youtube.com/@noobclubmarvel

https://www.youtube.com/watch?v=fFxELfBd3ng (Streamer's personal account N1) (Seen in the player's account name)
https://www.youtube.com/watch?v=qV1eHZVAc1w (Streamer's personal account N2) (Seen in the player's account name)
https://www.youtube.com/watch?v=PAhdpPdqcbo (3:11:50) (Accomplishment content for money on someone else's account) (The real name of the player who paid money to the streamer for completing the task is visible at the bottom of the chat window of the welcoming player who entered the game.)

https://www.youtube.com/watch?v=6J5IDrsYrWY (Opening crystals on someone else's account) (Seen in the player's account name)
https://www.youtube.com/watch?v=j2LIizG-3Us (Opening crystals on someone else's account) (Seen in the player's account name)
Demon Show -
https://www.youtube.com/@Demon_Show
https://www.youtube.com/watch?v=mYDNtSYIexY (Streamer's personal account) (Seen in the player's account name)
https://www.youtube.com/watch?v=ASwooNDkzVw (4:56) (Accomplishment content for money on someone else's account) (The real name of the player who paid money to the streamer for completing the task is visible at the bottom of the chat window of the welcoming player who entered the game.)

https://www.youtube.com/watch?v=Z2j47mHrwDk (Opening crystals on someone else's account) (Seen in the player's account name)
There are many other streamers who break the rules in the same way. I hope that you will be able to understand the situation and take measures to block your accounts. I will be waiting for your reply.