HMRC MTD for IT allows you to change the financial year from 6 April - 5 April, to 1 April - 31 March. As per HMRC, you opt for one or the other, and then it remains that way. Yet in Dext Solo, you cannot change this financial year. The only option given is 6 April - 5 April. Please allow Solo to change the year just as HMRC allows you to change the year. Solo should reflect that option too.