One thing you could try
I have to make a few assumptions to answer this question, considering I do not know what measures the website has in place to avoid access through a VPN. As a result, this method may or may not work.
If you are able to find a cheap VPS host, you could setup your own VPN on that VPS. In case you didnt know; a VPS is a Virtual Private Server and a VPN is a Virtual Private Network. I suggest searching for the best way to go about setting up the server once you've got a VPS to work with or following one of the tutorials I've linked below. Usually depending on how much you spend, it may not be the fastest, but it could quite possibly get the job done. Make sure that the IP address the server you rent is labeled to a country that is allowed to access the website you're attempting to connect to.
As a side note, I recommend using the SoftEther VPN Server software for a Windows based VPS, but if you use a Linux based VPS, I suggest using OpenVPN Server. There are some excellent youtube tutorials for setting these up. I provided one that I found for each of them in links below.
Softether VPN Server Software Setup Tutorial (For Windows VPS)
OpenVPN Server Software Setup Tutorial (For Linux VPS)