Your club link
A club link sets this reference up the way your club teaches: the demonstrations they have chosen, the grading pathways they follow, and whatever they are working on this term as a checklist you can tick off.
It changes nothing else. What you have ticked as learned, the grade you hold and the grade you are working towards are yours. Everything is kept on this device, sent nowhere, and changed any time in My progress. Your club never learns that you followed the link, or who you are.
Been sent a link?
Paste it here and it will set this device up. You need this on an iPhone or iPad if you read the site from an icon on your home screen: tapping a link there opens Safari instead, and Safari keeps a separate copy of your settings that the icon never sees.
Coaching a club and want a link of your own? Build one on the club links page. Reading the site on more than one device? Each one keeps its own copy, so the link has to be followed on each, and My progress explains what an icon on your home screen does and does not carry over.