Hello!
Judging by my approval waiting time, usually around 6 and a half years.
Jokes aside, I don't know what is Osclass doing, if they are even doing something. I submitted a plugin at December 2018, still not approved. One other guy on the forum added a plugin in mid 2018, if I ain't wrong, still not approved.
If you go to the Market, under latest products you can see 3 my plugins which got approved at the end of 2018, after I spammed Osclass Team to do it...
I wish you best of luck, but I think that Market is dying.
Regards.