Tax problem DE and EU OSS since 2021

Dear all Amazon members,

I am seller since 2021 and paying taxes in Germany and EU through OSS. I am using Lexoffice. I paid EU tax approx 10000€ in 2024 but I received amazon selling tax statement 2024 DAC7 (from Reports> Manage taxes) that I need to pay 3500€ only in 2024.

I calculate EU Tax from csv Excel sheer from Reports>Tax document liberary>Amazon VAT Calculation.

Any suggestion, any good tax consultant, please, I am loosing time and money, I will remain Thankfull to you.

Best Regards,

Eyas