The BSW desires to enter the Bundestag, however the election audit committee rejects a recount. However, the occasion has not but filed a grievance with the Constitutional Court. According to SPIEGEL info, there’s now a timetable for this.
https://www.spiegel.de/politik/deutschland/bundestag-bsw-will-bis-mitte-februar-auf-neuauszaehlung-der-wahl-klagen-a-25260bd9-15f9-40d0-9663-d7951b5c8756#ref=rss