Randomly generated site IDs are now numerical, to make them easier to interpret and enter manually, even on a good old featurephone.
If you have a premium account you can still rename the site ID to your liking, including your brand, a suitable campaign name etc.
Remember though that if you change the site ID, possible QR Codes, NFC tags etc also need to be changed, so choose early and wisely.
Existing site IDs are not affected. What’s set is set.
In this case the link would be cqt.se/081021.