[How do I change payment for SLGO from credit card to Linden dollars]

I paid for SLGO with a credit card because the link never worked for Linden dollars. How do I change it now to Linden dollars and take the cost off of my card?

[Furniture that sank under the floor]

How do I find and delete furniture that sank under the floor and disappeared? I am in a Linden home and was adding furniture. When I moved it I lost it somewhere. Now it is taking up prim space. I found a lamp sitting outside the house and deleted it. But I can't find a couch. Thanks for any help!