App continually failing

Experiencing real problems with app, can’t get the schedule to stay fixed which means every night have to change charge times to ensure that battery gets a charge on the Octopus reduced rate. The battery only receives a maximum 88% charge. Can get any support from GivEnergy as contact is impossible. Can anyone help me with this problem please.

deers have a look at the activity log on the web portal : if the schedule is being changed by any means, it ought to be recorded there.