0. Optional: remove your old vault address via the Reddit app.
It is not necessary; if you don't, both old and new addresses will stay on your account but only the one added last is considered 'valid'. Remember to transfer your points and profile NFTs to the new address to avoid penalties or losing your profile picture!
1. Fill in your Reddit Bearer Auth token here:
How? In a browser window on your computer, press F12 to open up Dev Tools and go to the Network tab, then log into Reddit (or if you're already logged in, log out and log back in). Look for any line in the Network tab that comes from oauth.reddit.com and click on it, then for that request, under Headers, scroll down til you see "Request headers" and look for one that looks like Authorization: Bearer xxxxxxxxxxxxxxxxxxxxxxxxxxxx.
Authentication:
Bearer
2. Click to connect the wallet you want to sign with:
You can choose the address you want to use via your wallet extension (such as Metamask).
2a. If you haven't yet, add Polygon and Arbitrum Nova RPCs to your wallet:
3. Cut and paste the following command in a terminal/cmd window.
Steps 4-6 must be completed within 4 minutes of Step 3.
4. Paste the entire response from step 3 in this box:
It should look similar to the sample below, including 'payload', the brackets, etc. If not, then there is an error somewhere.
5. Click this button to sign the message from #3.
6. Finally, cut and paste this last command into a terminal window.