no, after place deposit / sign SPA sure cannot apply

Usually, when u decide to buy house from developers, you will only place booking(part of the first 10%) to the developer to get the purchase/booking form. This booking amount varies eg. RM3K, RM5K, depends on the developer. You don't have to directly sign Sales and Purchase agreement on the same day. Meaning that you will have time to apply for mydeposit. Developer will hold on this booking, and have some time period for your to settle other process including the payment of 10%

BNM Kuching here also got CCRIS kiosk but still it takes me almost one week to submit the application.
Besides ccris, you need to prepare offer letter from developer, luckily this scheme is out right after I've booked the house. And also there are other required documents; certificates/statement/IC photocopy of your dependent.

Unless you have all these in your hand.

You should see how the online form is look alike then you will know what need to be done.

From the online form it mentioned 3 important things in offer letter: built up area, purchasing price & lot no.

I dont think it has official format of offer letter. As long as your booking receipt has stated these 3 things, you can use booking receipt as offer letter. But I cannot guarantee

in my understanding, as long as your SNP haven't been stamped yet, you can still apply for mydeposit, but you need to sign another SNP later if your developer is kind enough to help you get the mydeposit scheme because it has been stated that there will be extra clause added into the SNP for mydeposit scheme(10years lockin period). If you use your current SNP, mydeposit scheme might not be valid.

The best solution is to talk to your salesperson/agent and ask for his help.
edit : offer letter from developer should be booking form/purchase form/dedicated letter offer on the day you book the house.

if you will go for the house with / without mydeposit

then you can apply bank loan to save time

You can start your application now, don't have to wait for your loan approval. just prepare your own downpayment incase your application for mydeposit rejected. And for your information, all developer are scared to really introduce this scheme because no concrete information about the scheme, and to avoid booking cancellation later when the application for mydeposit rejected.

I don't even know this scheme is a loan or not until I call KPKT yesterday.

Sorry I was quoting Jesscey post before, stated that there will be additional clause in SNP for mydeposit applicant. This is not a confirm statement. But logically thinking, where else would they add the clause for the lock in period.
No, I got the information before this is a loan, but when I call KPKT, they stated that this is just an initiative from gov to help, thus not loan.

You placed rm2K as deposit and asked to sign the SPA. In the event you failed to obtain loan from bank and the SPA stamped already, will the developer refund the deposit to you if you managed to get the bank rejection letter to them?

You can go to apply the MyDeposit while waiting for the loan approval.  The stamped SPA and stamped bank offer letter will need to be submitted when claim the 30k.

I'm sure that developer will only stamp the SPA once he got his loan approved. Nowadays, more developer are doing this, signing SPA on the booking day to speed up the process once the loan approved. If not, RM2k also is not enough to cover the stamping and everything, nee to top up the payment too.

You placed rm2K as deposit and asked to sign the SPA. In the event you failed to obtain loan from bank and the SPA stamped already, will the developer refund the deposit to you if you managed to get the bank rejection letter to them?

You can go to apply the MyDeposit while waiting for the loan approval.  The stamped SPA and stamped bank offer letter will need to be submitted when claim the 30k.

Then what is the purpose of your booking payment? You pay RM2k to them and they cant reserved the lot for you? Take the money back, buy other from other developer. In today's market, purchaser have a lot of power in buying property, just sharing.

You placed rm2K as deposit and asked to sign the SPA. In the event you failed to obtain loan from bank and the SPA stamped already, will the developer refund the deposit to you if you managed to get the bank rejection letter to them?

You can go to apply the MyDeposit while waiting for the loan approval.  The stamped SPA and stamped bank offer letter will need to be submitted when claim the 30k.

Cannot la..   

You have to prepare that the officer may request marriage cert (surat nikah) from you if apply under couple name.

didn't happen to me. try go through each tab. they highlight in red which item didn't fulfill requirement

I was having the same problem as well, since my mobile number is of 11 digit (011 3xxx xxxx). Then I removed the first two digit (put it as 1 3xxx xxxx), which the application went through. The only problem is, my number was registered as 013 xxx xxxx), which is NOT my number. Can't changed it now. Sad.