According to your app Ramadan will be 30 days this year and Eid on 5 June, but according to the "European Council of Fatwa and Research" and "Fiqh Council of North America" which have adopted the "astronomical calculation as an acceptable Shar'i method for determining the beginning of Lunar months including the months of Ramadan and Shawwal." Ramadan will be 29 days and Eid on 4 June.
Unfortunately, the hijri correction doesn't allow you to correct the month of Ramadan to 29 days according to what we follow here, and we would like to have a Ramadan table with the correct days.
By the way, the official calendar in Saudi (Umm Al Qura calendar) also says that Ramadan is 29 days and eid on 4 June.
You can also see that other apps like Islamic Finder are setting Ramadan to 29 days this year and Eid on 4 June -> https://www.islamicfinder.org/islamic-calendar/1440/Ramadan/?type=Hijri
When i click on the info button for Eid-Ul-Fitr inte the app (Islamic Calendar) it sends me to this wikipedia link which also says Eid is on 4 June. -> https://en.wikipedia.org/wiki/Eid_al-Fitr
What are you using for sources for the hijri calendar and is there any solution for us here in Europe to change that for the holy month of Ramadan so we can print out a Ramadan table using your app. Thank you!