Just to clarify the issue here, we're trying to slowly remove the supply of openmuse in favor of open.muse (we're doing this as anyone can create an asset like openmycoin which isn't really supported by openledger, so we want to discourage these older assets). So we're no longer offering new amounts of openmuse (you can't deposit muse to get it) and we've placed orders on the DEX to buy up all available openmuse with open.muse. If you hold openmuse, we recommend you buy up open.muse with your openmuse and use that for any future orders on the DEX.
tl;dr: please use open.muse for all future orders