I'm going through the setup, Arduino User Profile steps.
Provisioning the board seems to work. It names the board, waits for it to become available and then goes to a page showing the board's details, but it says "Offline", and on the templates page it says it's "unavailable"
I've unplugged everything, restarted the computer, deleted the device, and re "provisioned it".
The only thing I haven't tried from the webpage is "upgrading" my plan. Do I need to do that for the board to be online?
This is expected. It will only go into an "Online" state after you upload an Arduino Cloud IoT Thing sketch to the board. That sketch contains the code that connects the board to the Arduino Cloud server through your Wi-Fi router and Internet connection.
I'm not sure I understood correctly what you mean by this. Please provide a more detailed description of what you mean by this in a reply on this forum thread to help us to understand it.
Where exactly do you see this "unavailable"? Please post the full and exact text that is the context around the "unavailable" indicator.
No. You can use the board with the "Free" Arduino Cloud plan. As you would expect, there are some limitations to the "Free" plan when compared to the higher tier plans (see the comparison table here for details), but the "Free" plan gives you everything you need to make projects that use all the standard features of Arduino Cloud.
Thanks for the clarification. The "Free" plan allows you to create one Arduino Cloud IoT Thing. When you use the template, a new Thing is created. So if you previously created a Thing then you can't use the template because that would require the creation of a second Thing, which exceeds the limit of your plan.
The obvious solution would be to upgrade your plan to one that provides more things. However, assuming you don't need the existing Thing, the alternative solution would be to delete the existing Thing. After that, you will be able to create a new Thing while staying within the limits of the "Free" plan.
I'll provide instructions you can follow to do that:
These instructions will permanently delete the existing Thing. If this is a valuable project that you need, you should not delete the Thing.
Click the following link to open the list of your Arduino Cloud Things in the web browser: https://app.arduino.cc/things
You should see a Thing listed on that page. Hover the mouse pointer over the Thing's row in the list.
A ⋮ icon will appear at the right side of the row.
Click the ⋮ icon.
A menu will open.
Select "Delete" from the menu.
The "Delete thing" dialog will open.
Click the "YES, DELETE" button in the dialog.
The dialog will close and the Thing will no longer appear on the Things page.
After that, try using the template again. This time it should allow you to create the new Thing via the template.