This is a great guide and also shows how complicated the BSC ecosystem is.
I find that a much simpler method is to buy LTC on any exchange and send it to Hive Engine where you can buy HIVE with it and then buy SPS with it.
No fees. No KYC and much faster.
Seems like more and more places are adding KYC all the time. Certainly, there is more than one way to aquire some SPS. The Hive Engine DEX is great and has low fees.
https://hive-engine.com/?p=market&t=SPS