Plants are taking a longer time to flower?

With photoperiods, the flowering period refers to the time between the 1st preflowers to ripeness. Outdoors tend to take a little longer for me. Photoperiods generally flower when they get 12h of light per day or less. More than that and most will stay in veg and that time is up to you. If you are outdoors, it is a good idea to work out the timing of your season so you can plant at the right time to get the plant to the size you want. This site is very helpful, just look at the sun & moon tab and sunrise and sunset. It has a nice graph you can slide along and see the daylight hours in your area. https://www.timeanddate.com/sun/spain/barcelona

Are they photoperiod seeds or autoflowering? If it's the former, it depends on the light hours. These plants bloom based on the hours of sunlight; flowering starts at <14 hours of sunlight. The safest bet is 12/12. A long vegetative phase isn't bad for photoperiods, as it can lead to massive monsters. However, flowering only begins when the hours of sunlight decrease.

Generally, you should ask the seed bank you're getting your seeds from what they mean by "flowering time" - some will indicate time from germination and others will indicate the length of time the plant will actually be in flower. Given your information, though, I'd say you should prepare for her to be in flower for the next 8 to 9 weeks... Good luck!