You should have received an email confirmation from Meermin almost immediately, but you will not receive a payment request until the shoes are ready to ship (which could be up to 20 days, according to the company). Rest assured; if you have received an email confirmation containing your order, you are just in a wait-mode.
I had this issue on a pair of classic line shoes. I could not pinpoint where the squeaking was coming from, but when I brought them to my cobbler for a resole, upon receiving them back, the squeaking was gone.I didn't bother contacting Meermin. Their delays in responding and the thought of having to potentially ship them to Spain was enough for me to address the issue on my own.
Unfortunately, the suit looks tight everywhere. Is this MTM or OTR?
The bunching of the fabric in your seat area is a telltale sign of the pants being too tight. Regarding the jacket, the upper waist is pulling and the shoulders appear to be too small for your frame.