Inflated lifetime mileage total

On 8/1/21 I did a session comprised of 3 routes for a total distance of 84 miles. For this session Zwift added 118 miles to my lifetime total.

On 8/3/21 I rode 3 routes for a total of 84 miles (again). This time Zwift added 104 miles to my lifetime total.

That’s 54 unearned miles. Why is this happening? How can I subtract 54 miles from my lifetime total? How can I prevent these mileage errors from happening again? Thanks.