The Dutch tend to write UH in pronunciation explanations rather than U, because on Dutch UH = English U, but U is another sound, in the key here it is UY. So that's why UH and U in explanations here are the same sound, the U.
Also: It says it's pron VEEP-ku, but in fact it's WEEP-ku (at least in Dutch), but the W is 'thinner' (by lack of a better word), it's sound is made by saying the W while holding your mouth as if it's saying a V. So it's a W made more in the front of your mouth rather than in the middle of it. (I hope that made sense)