From Earn2Life Wiki: Money-Making in Second Life

Some advertisers do not allow completion of Pay4Visit offers with the Earn2Life.com group tag worn on ("Ask me to earn L$$$").

Before completing such an offer, you will get a message asking to switch your SL avatar to another group. To switch, perform the following actions:

1. Right-click on your avatar and choose "Groups..."
2. Select "none" from the groups list
3. Click "Activate" button

Important! Your account can be Banned from that owner's property if you do not remove the group tag! Be careful to pay attention to all posted signs and messages on that property. Especially pay attention to signs posted at the landing zone when you first teleport onto the parcel.