Unfortunately, that would mean that I'd have to get the complete functionality of the app to work on the website which is still not planned, sorry. The link to the tracking website should be there for pretty much every courier - only some like eBay are missing as the order IDs cannot be opened directly on the eBay website. There might be some others currently missing that require special attributes, if you tell me which ones are not working for you I'll check if it's a mistake.