Who is Tech Support for MLS?
There are a couple of guys working at the Church office building who provide front-line technical support for MLS, but only members with the appropriate Stake-level callings are supposed to be calling them. If you feel you need technical assistance, first try seeing if your question is answered in this FAQ, then try posting your question to the LDSOSS mailing list, and then finally, try bugging the appropriate person in your Stake (like the computer specialist or the clerk).