It was never free or instant. It only works from 9-15 on workdays and not on weekends. Also if there are holidays in eu also doesn't work for domestic transfers. Easter is fun whe it stops for 4 days even though country has only 3 state holidays during those times. Costs from 25-40 cents per domestic transaction or 7-17 euro per over border one. Depending on the bank.
It takes around an hour or some days over border for transfer to go through.
Maybe you think of sepa instant which is supported by some banks. Very new. Mostly used for people to people transfers. Some shops are starting to support it. It is actually instantaneous anc works weekends. It seems to be mostly free.
https://www.eurail.com/en/plan-your-trip/rail-planner-app