Quick google translate for the beginning of the second point where something about an "8" is missed in the English translation :
สำหรับประเทศอื่นๆ ในภูมิภาคแอฟริกา (นอกเหนือจากในรายชื่อ 8 ประเทศ)
for other countries in the African region (Other than the list of 8 countries)
So it seems the mandatory quarantine is back for the "African region" excluding the 8 countries of the list who are just forbidden entry.
I tried to use their recovery email to fix the date, but it didn't work like you.
Reapplied from the beginning again, and a few seconds later I received a new TP with this time the right dates.