Late Show with Stephen Colbert, culminating in the band's appearance on the show in July 2018, in which Stephen Colbert presented them with a used tour van. The band also shot a music video during their appearance for their single "Conquer This Climb" featuring Colbert off of their upcoming Vol. IV album. Vol IV: Because of the Brave was released on July 19, 2019. However, the band would later be accused of plagiarism by YouTube musician Douglas Patrick claiming that the band stole his "music melody and structure" from one of his instrumental tracks to use for the song "Wake Up" which is featured in the album and threatened to pursue legal action against the band. Volz would later respond to the allegations, claiming that he was unaware of the plagiarism, stating that he only writes lyrics to the music the rest of the band present to him and that it was the work of another member of the band that he didn't name at the time who "royally screwed up" before claiming that he was "upset" over the matter and had reached out to Patrick to offer compensation. However, more songs on the album were discovered to have allegedly been lifted from other YouTubers including Patrick. It was also discovered that the music for the song "Conquer This Climb" was purchased by the band from another metal YouTuber known as Riff Master T. In October 2019, bassist Tommy Gibbons admitted that he was the one responsible for the plagiarism after an old social media post from back in August revealed that he was bragging when YouTube metal musicians were learning to play a song that he claimed to have written which would later be discovered to have been stolen directly from Patrick. In a statement that he posted on social media, Gibbons stated that he takes "full and all" responsibility for his actions and that none of the other band members were involved in the plagiarism. On October 6, 2019, Volz announced on social media that the band have parted ways with Gibbons. On January 11, 2020, Joshua Skellett and Ethan York (formerly of Cold) joined Flaw as new bassist and drummer. Georges departed the band to focus on his MMA career. In March 2021, multiple publications reported that Volz had repeatedly used racial slurs at a concert, leading to him being dropped by the record label that distributes