Don't worry about it, you guy are cool.
honestly nothing is wrong with it
more likely it's those people who are ignorant and blind themselves.
they only seen an orange robe you wear but they thought you try to dress as monk.
which it reality it's just a cloth, nothing more or less.
you didn't even wear your outfit exactly same as monk .
you didn't even saying you're monk.
Thailand didn't own Buddist, Kasaya nor a right to wear an orange cloth.
and your live concert isn't even in Thailand.