FLAPP booking didn't sync user details - ticket voided

I used the newly launched app to make an international booking. The app wouldn't accept my full names and didn't give a clue on why not, nor did it do any input validation. So I put in my 2nd name only I already had a complete user profile on the web where my passenger details were accurate and figured the ticket will be fine - since I have used them previously and know there are no issues with my user profile However on checking in I was refused due to first name not on ticket - and had to buy an expensive replacement ticket Travelstart offered to refund only 10% of the cost of this new ticket - even though I believe it is completely their fault since their app wasn't syncing with the user profile, nor had it sufficient input validation

When you enter traveler details on the web it automatically concatenate multiple names and give an explanation....why didn't the app do this

And who knows, maybe by now they have fixed the app....

And I am likely to get a wishy washy reply on this and they still are not going to accept responsibility - like they do will all other complaints on here