ok so far so good
i didnt understand this sentence from there an also from here
Note that in your financial account in OASIS you can make "advanced" payments. Which means you add funds there before you use them for exam application.
this from OASIS
You can use on-line payments to pay an amount that you owe to ECFMG for past services or to pay in advance for future service requests, such as exam applications and requests for USMLE transcripts. If you pay in advance, remember that you must still complete the appropriate application/request form.
what is the past services and what is the future services?
and can you explain whether the services here is past or future
1-pay the money there then when it is enough apply for examination
2-apply for the examination and reach the payment step then start put money in the oasis account then pay
the point is i dont know what they mean with " If you pay in advance, remember that you must still complete the appropriate application/request form
" so that means for future services i have to sen form 900 right
i already made an application and reaching the payment step
so is that considered advanced payment if i pay there right now or not?
can you explain more in this part