I put €50k (main) and €20k into the switch n save calculator on their webpage last night for a €250k mortgage on a €480k house (under 60% LTV) and it 'accepted' me but thats not to say it would pass their back office .
It should not even pass the website in MY opinion if they have no intention of going thru with in in their back office. Its not fiar to waste peoples time and get their hopes up when they have no intention of delivering.
I am not saying you cannot get a mortgage but the juicier rates (less than 1% over base) would be available on mortgages which are at a lower income multiple , NIB would look at 3x and 1x incomes meaning they would only lend you €170k at the juicy tracker rate .
Thats my hunch on what happened to you anyway.