The image where the shrinking appears near the bottom looks very similar to a problem I had with a tube shaped print, never did get an answer from Qidi as to the cause.
I just put it down to yet another print failure, from memory the same print was okay the second time I tried it.
I think I deleted all the photos of all the problems I sent back to Qidi. but if I've still got them I'll have a look through them.

I bought my printer from Amazon UK and was going to send it back just a few days within first using it, but Qidi made me an offer that I couldn't refuse to keep it. However when funds permit it will be replaced by a Prusa XL because I want more reliability.

Just started a fourteen hour print for a mould part for lawn edgings, I'll see what it's like in the morning.