It can take up to 1–2 days for your purchase to appear under Account → History → Online.
If it still doesn’t show, it may be because:
The purchase wasn’t made through the link in the Rabble app.
Cookies were disabled in your browser.
An ad blocker was active.
You clicked on another link or discount code from a different site after going through Rabble.
If none of these apply, please wait another day – sometimes registration takes a little extra time.