Advice for DIY progesterone UK

I’ve decided to DIY progesterone as my GIC won’t provide it and it seems to be cheaper/quicker than looking for a private endo. I’m looking at ordering from United Pharmacies - 100mg Microgest which I found through HRT Cafe but am wondering whether I should be using a VPN or some kind of privacy browser to do so or am I overcomplicating it? Is this brand suitable for rectal administration? Should I limit how much I order in bulk to avoid potential customs fees/seizing? Has anyone had issues with this? Are they reliable? Any advice appreciated!