The Heleus Wallet should open automatically. Click on Open Heleus Wallet above to open it, if it doesn't. If the Heleus Wallet still doesn't open, click on Copy Link to Clipboard, open the Heleus Wallet manually and choose Open Link from the account menu and paste the link there.
The Heleus Wallet is available for a lot of different platforms. Depending on the platform, you can download the Heleus Wallet or get it from the availble store for free.