G'day Shepherd - welcome to Solo, and thanks for asking the question
Based on what you're shared, it sounds like the inactive TPAR button could be due to a few things...
1. You're in a TPAR-eligible industry but you haven't set your GST registration to 'Registered for GST'. To toggle this setting, login to the Solo app and select the More tab » Business settings » Tax and financial reporting » GST registration - where you can toggle between 'Registered for GST' or 'Not registered'. If you're currently 'Not registered', swap over to 'Registered...' and return to the expense flow to see if you can now toggle Include payments in TPAR
2. If it's not your GST registration status, it could be that you've not added the supplier to the expense just yet. You can add the supplier towards the bottom of the expense creation form, just before the Notes section.
Check those out for me and let me know if it works or not 🤝
