Ramadhaan & Fasting

Woman's I'itikaaf breaking due to haidh

Q: I made an intention for sunnah itekaaf in Ramadaan. Unfortunately I was only able to sit seven days due to haiz. (Mufti I had miscalculated my days.) I have sat 1 day in itekaaf as qazaa and my intention for the fast was for a Ramadaan qazaa fast. Is this correct or do I sit for 3 days in itekaaf? Is my fast correct? Mufti was I sinful in miscalculating my days? It grieves me greatly. Please advise.

Qadhi announcing Eid

Q: If a person is going on jamaat to an Arab country for ramadan and eid, and in that country they use scientific methods to determine the date of eid without actually seeing the moon, should one celebrate eid with them? If not, should one look for the moon and if not seen, fast on their eid and celebrate eid the next day?