Hootsuite PAID Apps
All charges for Hootsuite PAID apps will show up on your monthly invoices from Hootsuite.
Synap Apps
If you are using Synap Apps, click on the Invoices option to view your invoices. More info on Synap Apps is available here: https://synaptive-support.zendesk.com/hc/en-us/articles/360004626691-Synap-Apps-Quick-start-guide