Hello! Regarding changing your email address with the BIR, you may need to visit your RDO (Revenue District Office) to update your information. You will need to fill out a BIR Form 1905 for this purpose. Make sure to bring a valid ID for verification.
As for getting a TIN ID, it is still possible to obtain one at the BIR office. You will need to bring the necessary requirements such as a valid ID and proof of your TIN. The process may vary depending on the BIR office you visit, so it's best to contact them directly or check their website for specific instructions.
If you have any more questions or need further assistance, feel free to ask!