Here is the link to the manual: https://d2v0huudrf11kh.cloudfront.net/vevor-center-goods/%E9%85%BF%E5%93%A5%E8%AF%B4%E6%98%8E%E4%B9%A6_1649334198315.pdf.
Dave, did you run the unit with vinegar and water, and then just water alone before distilling your liquor? These have to be hand scrubbed, double rinsed, then make at least two pre-runs.