hi, ive just bought a sealed iphone se 2020 !online. the first screens is ' remote management by coliiers international property' then ihave to sign in to my microsoft account. but it keeps saying they are having trouble signing me in ! .

hi, ive just bought a sealed iphone se 2020 !online. the first screens is ' remote management by coliiers international property' then ihave to sign in to my microsoft account. but it keeps saying they are having trouble signing me in ! And won’t let me go any further.I’ve been trying for 3 days. I’ve had iPhones before but never had any problems like this

please help

thank you

Andy