Where did you get these Eibach springs from. The Eibach Pro Kit lists as progressive on their site and in the locations i can purchase. Do you have a link to these linear looking springs you purchased?
urotuning lists them as progressive
http://www.urotuning.com/Eibach-Pro-Lowering-Springs-Mk7-GTI-2-0T-1-Drop-p/85117.140.htm
Eibach also lists the spring as progressive rate
https://eibach.com/us/c-176-product...agen-gti-pro-kit-sportline-anti-roll-kit.html
OE rate: 33 N/mm (188 lbs/in)
PRO-KIT Progressive rate: 26-38 N/mm (148-217 lbs/in)
https://www.amazon.co.uk/gp/product/B00BM6PUV0/ref=ox_sc_act_title_1?smid=A3P5ROKL5A1OLE&psc=1
Note that the Amazon description says progressive, but they are not. They are linear.