welcome to the forum!
A good place to start with your very familiar sounding issues involving a LIKE200i which has starting/running issues after sitting unused for a length of time ...would be reading the posts found in the heading/section for LIKE200i in this forum.
How many miles on the scooter?
Wrecked, dropped, flooded, how stored, reason for replacing fuel pump?? pump filter would normally have handled any junk in the tank
"Riding for a while...shuts off"? How long, what speed? (gas cap not venting...? gas-in-oil soft-seize overheating?
Parts replaced so far?
Battery condition, spark plug and cap installed properly - both snug?
Unusual engine noise?
Lots of possibilities - many, many discussed in the LIKE200i section.
Please give us more info.
The LIKE200i is a good reliable scooter -
Stig