Maybe it's not the central issue here, but the mortgage figures seem very confusing, and possibly incorrect to me (as they seem to be to @LS400?).
You borrowed €405k at the start of 2008 on what seems to be a 38 year term and the balance has only dropped to €335k after 15 years? Seems strange to me. I would've expected the capital balance to be lower assuming rates of < 5% to date?

Please see attached drawn down in 2008 and topped up then also to finish the build so €308k plus €100k have listed out exact statement switched and combined both in Jan 2021 and added €20k for some home improvements.