HA newbie version 2025.5.3: "is not a valid add-on repository"

[cobbiehub]

I just installed a brand-spanking new version of HAOS on an old intel laptop (version 2025.5.3).

Following the instructions, I don't see a way to navigate to "Configuration" > "Integrations", but the closest thing I see is Settings -> Add-ons. I click the link that says "head over to the add-on store to get started."

There is a section called "Home Assistant Community Add-ons", but Mammotion is not listed there.

The three dots in the top right has a option of "Repositories". I paste "https://github.com/mikey0000/Mammotion-HA" into the Add field and press the ADD button. I get this message:

(!) https://github.com/mikey0000/Mammotion-HA is not a valid add-on repository

What am I doing wrong?

[mikey0000]

Install hacs

[cobbiehub]

Thank you. I wasn't clear to me that 'HACS' was different from the "Home Assistant Community Add-ons."

This is how I installed HACS on HAOS version 2025.5.3:

1. Go to the HACS download page: https://www.hacs.xyz/docs/use/download/download/#to-download-hacs
2. Select the correct tab: OS/Supervised vs Container vs Core (I selected OS/Supervised)
3. Click the 'my link' link in the instructions (for me: https://my.home-assistant.io/redirect/supervisor_addon/?addon=cb646a50_get&repository_url=https%3A%2F%2Fgithub.com%2Fhacs%2Faddons )
4. It will suggest the link to use to access your Home Assistant instance. Correct the link, if needed, then click Open Link.
5. You will be taken to a page in your Home Assistant. It will ask if you want this add on. Click on the affirmative.
6. On the next page, click INSTALL. This does not install HACS, but installs the add on which installs HACS.
7. The INSTALL button will be replaced with START. Click it.
8. At the top of the page is a Log tab. Click it. Live log messages will scroll by.
9. When you see the message in green: "INFO: Remember to restart Home Assistant before you configure it", the installation is complete.
10. Restart Home Assistant: Developer Tools -> Check and restart -> RESTART: "Restart Home Assistant": RESTART
11. Follow these instructions: https://hacs.xyz/docs/use/configuration/basic/