My feeling is nobody knows wtf is going on with this even immigration themselves and the lack of consistency between offices may see this happening vs others just going "ok you came to do a report then lets do it". Show me something official from the ministry or immigration themselves saying 90 day reports are required. I have followed this day in day out for months and seen nothing except other foreigners saying it needs to be done. Happy to be corrected.
If you complete kyc then yes. kyc requires a work permit for most of these things. Something as simple as updating your details in the system like new passport or something will trigger kyc
I have no idea what deeppocket is. Haven't even googled it. But first thing that comes to mind is be careful with things like this in thailand. I have had experiences with things in the past where they let you sign up easy and put money in then all of a sudden lock your account and request work permit and non-imm visa "kyc" to unlock it. Satangpro (now orbix) and truemoney wallet were a couple that happened to me. Could be wrong though as i didn't look into this.
Anonymous participant I did that. I had a non-b with multi re-entry that I didn't want to cancel in thailand as I should have. I left a day before and let it lapse on it's own. Then applied for the DTV. This had me concerned but I got the dtv and re-entered yesterday. I don't see why it is strange to finish one visa before applying for a new one