Alpert's appropriately titled album 50 is out now.
Fans are encouraged to contact their ticket point of purchase for refunds.
The revived group also added a trio of new stadium shows to their From Zero 2024 world tour.
The outing will hit 65 cities in North America with support from the world's saddest clown, Puddles Pity Party.
The Argentine star began her first U.S. tour on Sunday (Sept. 22) with a sold-out show at Irving Plaza in New York City.
The third year of the global trek will feature 21 shows from April-June of next year.
The singer and daytime talk show host also announced her limited engagement "The Gift of Love" holiday tour on Wednesday (Sept. 18).
The 11-date Stairway to the Sky Tour will hit the U.S. and UK, kicking off on Oct. 23 in San Francisco.
Doechii's latest mixtape Alligator Bites Never Heal reached No. 41 on Billboard's Top R&B/Hip-Hop Albums chart.
The 43-stop outing is slated to kick off in Australia in March and last through an October gig in Seattle.
