Update, all is good, basically there are 2 immigration in my city, one is for minor stuff but the covid extension I need to go to the major one.
I first went to the minor one and I explain my situation with my deed/bluebook, they give me the TM30 right away, however afterward just before I was about to leave, another person come up to me, told me that its very very difficult to get the covid extension, that I don't have many days left, that I would be rejected etc... and for a low price of 6000 baht, he can make sure he gets everything done. I told him no thanks, I have the embassy email.
I show up at the major immigration office and they pretty much give me the same told, told me that if I don't have the embassy email it would problem for me, I didn't wait for them to give me the price quote for solution I just showed them my email and they didn't give me much problem afterwards.
However I didn't bring 2 passport photo copy, so I had to pay extra 120 baht for it, then I follow standard procedure and paid 1900 baht, I got a 15 day stamp and I was told I need to come back in 15 days again for the final stamp.