Low flow. Don't make too many changes at this point since they are already stressed out. The anemones will attach WHEN they want to attach. Unlike most corals, they have a mind of their own. They will do what they want to do (including dying).
Which state are you located? They seem to have issues when shipping outside of California. I haven't had issues with them since I am in LA.
Also, ask them for their salinity parameters. You might need to adjust. Normally with soft corals you drip acclimate or do a 50/50 bag water and tank water to adjust to salinity aside from temperature.