Martha and the Vandellas (known from 1967 to 1972 as Martha Reeves and the Vandellas) were an American all-female vocal group formed in 1957. The group achieved fame in the 1960s with Motown. Selected Members of the group were inducted into the Rock and Roll Hall of Fame in 1995. Formed in 1957 by friends Annette Beard, Rosalind Ashford and Gloria Williams, the group eventually included Martha Reeves, who moved up in ranks as lead vocalist of the group after Williams' departure in 1962.

Motown struggled to find good material for many of their acts after the exit of Motown contributor and Reeves' mentor William "Mickey" Stevenson in 1967 and Holland-Dozier-Holland in early 1968, but after their former collaborators left the label, the Vandellas initially continued to find success with the Richard Morris-produced singles "Love Bug Leave My Heart Alone" (US #25; R&B #14) and "Honey Chile" (US #11; UK #30; R&B #5) added to their already extended list of charted singles. In the summer of 1968, the group joined The Supremes, The Temptations, The Four Tops and Marvin Gaye in performing at the Copacabana though much like albums from the Four Tops and Gaye, a live album of their performance there was shelved indefinitely.  That same year, label changes had started to take effect, and Gordy focused much of his attention on building the Supremes' as well as Diana Ross' burgeoning upcoming solo career that would follow in 1970. The Vandellas' sound (and the sound of many Motown acts with the exception of Marvin Gaye, The Temptations, The Marvelettes, and Stevie Wonder) suffered as a result.  However it was the infighting among the members of the Vandellas that led to their problems. Kelley was the first to be let go after reportedly missing shows, as well as getting into altercations with Reeves. There were many instances where these "fights" happened on stage. Kelley was fired in 1967 and was replaced by Martha Reeves' sister Lois. Simultaneously, the group's name was officially changed to Martha Reeves and the Vandellas, to conform with the company's recent changes of The Supremes' and The Miracles' names to reflect their featured lead singers. During this time, Vandellas records including "(We've Got) Honey Love", "Sweet Darlin'" and "Taking My Love and Leaving Me" were issued as singles with diminishing success.Answer this question using a quote from the following article:

What problems were happening?
Kelley was the first to be let go after reportedly missing shows, as well as getting into altercations with Reeves.