Have only just come across this thread.
Here is where were are at with the alts of quickseller mentioned in the OP:
24 November 2013, 17:18:43 Date Registered: opossum 925
14 July 2014, 10:45:33 Date Registered: Sempruls 87
20 July 2014, 12:09:48 Date Registered: fonenumba 412
21 July 2014, 01:34:31 Date Registered: BTCreward 611
21 July 2014, 02:49:02 Date Registered: needFREElunch 273
21 July 2014, 03:28:25 Date Registered: applesRyummy 128
21 July 2014, 13:25:28 Date Registered: screwUdriver 346
21 July 2014, 15:22:40 Date Registered: Rum152 147
22 July 2014, 15:51:40 Date Registered:
quickseller02 February 2015, 17:47:39 OP thread begins.27 February 2015, 07:15:34 Last Active: Sempruls
11 March 2015, 05:15:42 Last actual post applesRyummy
quickseller posts: (15 March 2015, 01:31:27 part of the overall post) talking about the UID BTCreward having been sold.22 April 2015, 07:02:02 2nd Last actual post Rum152 - last post 05 September 2015, 21:04:32
11 July 2015, 04:13:13 Last actual post needFREElunch
05 September 2015, 21:04:32 Last actual post Rum152 - 2nd last post 22 April 2015, 07:02:02
26 October 2015, 18:49:15 Last Active: Rum152
27 May 2016, 08:35:57 Last Active: needFREElunch
14 March 2017, 22:47:02 Last Active: opossum
10 August 2017, 13:42:25 Last Active: applesRyummy
2018-04-20 5:11:38 AM
password changed screwUdriver
02 July 2018, 01:20:39 Last actual post screwUdriver
09 July 2018, 18:40:07 Last Active: screwUdriver
20 July 2018, 18:52:21 Last actual post fonenumba
2018-06-21 9:08:22 AM
password changed screwUdriver
28 July 2018, 02:51:47 Last Active: fonenumba
2018-09-08 2:34:46 AM
password reset via email Quickseller
2018-10-19 5:45:54 AM Changed to Archived status
Autoban user screwUdriver (BPIP)
18 March 2019, 09:52:17 BTCreward stops posting online in English - does not post again until 04 September 2019, 00:21:25
04 September 2019, 00:21:25 BTCreward resumes posting (entirely in Russian) - has not posted since 18 March 2019, 09:52:17
2019-09-04 12:46:28 AM Changed to Archived status
Autoban user fonenumba (BPIP)
22 September 2019, 11:10:02
3rd Last actual post Quickseller
01 October 2019, 13:06:17
2nd Last actual post Quickseller
07 October 2019, 05:33:02 Last Active: BTCreward
20 October 2019, 16:15:40
Last Active: Quickseller
quickseller posts: (15 March 2015, 01:31:27 part of the overall post) talking about the UID
BTCreward16 July 2014, 04:34:45 Date Registered: superSTAR777
07 September 2014, 02:52:24 Date Registered: Babba D
As you can see, it would appear that quickseller is still in control of the above alts with the possible exception of
screwUdriver and
fonenumba which quickseller probably sold as a package and the buyer then got those accounts autobanned through their previous activities.
Sometimes you have to wait a little bit for the information to reveal itself.