Solved. It's because battery saver in AutoRemote I have a TASKS named "test1" : test1 --> AutoRemote Message --> IFTTT --> LINE message PROFILES: From 09:50 every 5m Till 10:20 TASKS:test1 1.AutoRemote Message: Recipient:IFTTT, Message:FBN=:=%TIME, with Continue Task After Error checked 2.Flash :%errmsg Result: at time 09:50: LINE message=[IFTTT] 09.50, no %errmsg (so I think settings are all right) at time 09:55: no LINE message, %errmsg=Timeout 10:00, 10:05......just as same at time 09:55 After I tap "test1"--> tap AutoRemote Message -->tap Configuration-->do nothing in AutoRemote Message page-->go back to Action Edit-->Task Edit-->Tasker-->Phone Desktop(to save changes), I will get the result like above(that is one time success again). Any help? suggestion? idea? Thanks very much.