As said by @asu has a point.

You are forbidden all three Alt accounts: @ Dubrovin, @ Dubrov12, @Hrome.
You have five accounts, three prohibited, two are still active.
So now you are very clear why you are banned.
The answer:
Avoid the ban.

Quote from: Aisik on December 01, 2019, 02:57:11 PM

unlock my account https://bitcointalk.org/index.php?action=profile;u=2689121

Proof:

Quote from: Hrome on November 06, 2019, 11:25:54 AM

Campaigns joined Twitter facebook
   Telegram username @Dubrovin9
   Facebook Profile Link https://www.facebook.com/melanondubrovin
   Twitter Profile Link https://twitter.com/PandaXRP

http://archive.is/mmk7g

Accounts Connected:

1. Melanon
2. Dubrovin (Archived)
3. Dubrov12 (Archived)

Proof:

Quote from: Melanon on February 10, 2019, 07:29:32 AM

Week 5 (04.02.2019 - 10.02.2019)
1) Your Bitcointalk username : Melanon
2) Bitcointalk profile link : https://bitcointalk.org/index.php?action=profile;u=2503795
3) Telegram @Username : @Dubrovin9
4) Email Address : dubrovin100@outlook.com
5) Which campaign(s) you are participating in : Twitter
6) Twitter audit link : https://www.twitteraudit.com/nilbtc4555
7) Twitter username: @PandaXRP
8 ) Twitter profile url: https://www.twitteraudit.com/PandaXRP

http://archive.is/33pfR

Proof:

Quote from: Dubrov12 on September 19, 2019, 07:17:37 AM

Twitter url: https://twitter.com/PandaXRP
ETH address: 0xA954F9F523FaC02d1570A9984AD873764Bc8Ea2f

http://archive.is/MsDRH

Quote from: Melanon on February 10, 2019, 08:37:04 AM

Twitter Link: https://twitter.com/PandaXRP
ETH address: 0xA954F9F523FaC02d1570A9984AD873764Bc8Ea2f

http://archive.is/ilWld

Link: https://bitcointalk.org/index.php?topic=4553135.msg47976295#msg47976295

Quote

Bitcointalk Username: Dubrovin
Telegram Username: @Dubrovin9
Twitter Username: @PandaXRP
Facebook Username: Aндpeй