Svadhistana

I think that my today experience will be useful for everybody. I went to Chaeng Watthana this morning ( August 8 ) and around 13.45 I showed my TM47 request. I showed also the email of the immigration office which I received yesterday (August 7) around 17.45, inviting me to go to the Immigration Office asap because my online application was rejected. The officer did not mention anything about the delay, she performed her duty and just informed me that the rejection was due to the fact that it was my first 90 days report after changing passport. Therefore 7 "real days" beyond the expiration are ok ( from 1st to 8th ). Thank you and bye bye. Case closed.

On July 24 I wrote the TM47 form online which was accepted. Today August 7 it is still pending. The previous report expired on August 1. Tomorrow should be the deadline (correct?). Can I have to wait until the online system send me the new updated report even if it arrive beyond tomorrow or I must go to Chaeng Watthana not later than tomorrow? Thank you

Thank you all for your answers. About appointment on-line in Chaeng Wattana..... I have found the link to it inside the website of the immigration. I was directed to a page where I could set the date and the time of the appointment. I received an email from an outside service which demand a payment for this service (!). It seems that the appointment is just for people who provide previously all documentation on line and then go to the appointment to get the extension on the booked date. But it seems that this is not available for extension of stay non-o child support (my case). So it is not possible to take any appointment in this case. Is it like this or I didn't understand anything?

I have a simple question for which I could not find the answer here. How many days in advance prior to the expiration of a non-o extension of stay is it possible to request the extension in Chaeng Wattana immigration office? Thank you