App Freezes at opening (MacOS)

[Former user]

Dear s-Invoice Team,

I have tried to end the numbering settings of invoices from "{YYYY}}-{{NNNN}} " to "{{NNNN}}-{YYYY}}" and since then the app does not work anymore.

It freezes every time 1 second after opening and I cannot operate it at all anymore.

Could you please help me with this? I need to use it asap.