I know about Openbank, but Santander is not "free" unless you have your payroll there, and sometimes they ask you about when you send money, it happened to somebody close to me.
If a bank won't let you do something, get out of there.
Before having Openbank I was at ING, and for a week, I couldn't access my funds because the application, only for some, was being updated (no mobile app, no website, no anything)...
As soon as I was able to log in, I checked that everything was correct, and I changed banks.
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