I just put together my new build and i am idling at 60C. I am using a Ryzen 7 7700 paired with the Corsair H115I ELITE CapellIx XT. I have coolant temps of 30c and idle temps of 60C+. I should note, i am not using the tension CPU bracket that i thought this cooler came with(it doesn't) and instead i am using the 4 screw AM4 bracket. I only mention this because i am worried it may be a tension issue since i always see them install these with the tension bracket when looking on youtube.
Rub everything off with alcohol and reaply thermal paste. A 3-4mm dot should be enough in the center. Put everything together again while applying even preassure on all corners/ screws. If there is no difference in temperature, the problem is most likely not the appliance of the thermal paste. Probably some manufacturing mistake. I would reach out to customer service then.