[2][3] Voința managed to win again the Liga IV – Caraș-Severin County in the 2017–18 season[4] and faced in the promotion play-off, the winner of Liga IV – Hunedoara County, CS Hunedoara, but despite a 1–0 away win in the first leg, Voința lost the promotion after an 1–2 defeat in the second leg in front of their own supporters.

[12] As newly promoted in the 2021–22 Liga III, Voința Lupac reached the play-off in the seventh Series VII and finished in 3rd place, ahead of Pandurii Târgu Jiu and behind CSM Reșita and CSM Deva who finished in the first two places.

The squad of the first season in the third league included players like: Cătălin Căpățână, Dragoș Trașcă, Daniel Petruț, Dragoș Circa, Cristian Danci, Milorad Banac, Daniel Vădrariu, Andrei Vaștag, Alexandru Avramovici, Alexandru Giurică, Flavius Lucica, Bogdan Bărbulescu, Robert Dalea, Takenori Kawagoe, Andrea Săndescu, Denis Jivan, Denis Arjocan, Flavius Cega, Vichente Marcu, Emanuel Jinga, Cristian Popa, Demetris Cristodulo among others.

Voința Lupac appointed Lucian Dobre as head coach for the 2022–23 season,[13] but he departed with three rounds remaining in the first stage of Series VII.

[14] Adrian Enășescu took over[15] and guided the team to a 6th-place finish in the first stage, ultimately securing 5th place overall after the play-out round.