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One of our members just built an app that does all this for you: https://steemit.com/minnowsupportproject/@netuoso/introducing-the-minnowsupport-delegation-helper

To undelegate you just complete the process again and delegate 0. Seven days later your SP is available again!

I will sound rude as fuck now, but, how am I supposed to trust someone with my master password if he chose 100% powerup on his post.

You use your Active private key. It goes directly to SteemConnect, not to netuoso. His app just generates the link for you, so you don't have to copy/paste/change like I tell you in my thread.

If you don't trust him just use my method, but realize you should use Active key, which you can immediately change by changing your password.

When I try v2.steemconnect i get

close Error
Oops, something goes wrong!
Error code: 1 missing required active authority
Do you want to try again?

Use Active Private key.

Under which it says:
The active key is used to make transfers and place orders in the internal market.

I am - login to show private then c/p then I get that message

Did it! Sorry, missed a detail! Thanks!