When you refer to Acrobat, I assume you are talking about the free Acrobat Reader and not the "not free" full on Acrobat editing suite.
I don't use Acrobat Reader, so I can't confirm that. IMHO the forms from the KBank email are not "fillable".
Here is an example of what I consider to be a "fillable" form (TIN application form) https://rd.go.th/fileadmin/tax_pdf/request/lp10.1_110355.pdf which can be filled in using free Acrobat reader and PDFgear.