I bought my bike just 2 weeks ago and I always hear a creaking noise coming from the bottom bracket area. I can hear it only when I press hard on the right pedal on the downstroke. It sounds like a repeated metallic click, if that does make any sense. I brought it back to the shop and they tightened the crank axle, switched pedals and shortened the chain but the noise is still present. Do you have any idea? Today I have tried other new bike of the same model and they don't make this noise.
EDIT: I am not a technician myself and I don't really know how to fix this issue but I really appreciate your answer. I bought my bike at a Decathlon store a few weeks ago and this week I went there 4 times and talked to 4 different technicians and none of them could even hear any noise. They already "fixed" the front derailleur more than once (Only limiter screw) and it is working perfectly, so I think that's not the issue. Another one suggested that the chainring bolts could be loose, but on my bike there is none (The ring on the Rockrider ST 520 are attached differently)
The noise I am hearing is present only when I push the right pedal, so there is nothing when I don't pedal or when I use the left one. What I hear is a fast repeated metallic click and I have no idea where it is coming from.