Hi ChickyWoo,
I get that you are trying to save with the STP feature you don't use. If you are paying $141 per month, I can only assume you are using AccountRight Plus. Generally, MYOB subscriptions cover cloud storage, bank feeds, STP, and Superannuation. If you use none of those features you can get by without a subscription. Another option is to downsize your subscription to Business Lite or Business Pro, however, this will remove the ability to use the file from the desktop app. You can check product differences using this link.
Feel free to post again if you need any other help.
Thanks,
Genreve