Serum Rent To Own

how can i access rent to own serum from the website

https://splice.com/plugins/15493-serum-vst-au-by-xfer-records
That is the Splice page for Rent to own.
You manage the plan through your account on Splice.com

If this isn't what you're looking for, it's because I'm not quite clear on what you're trying to access.