I have a really minor problem here: I have a phone contract with Chunghwa Telecom and each month, they send me my bill via e-mail. After payment, I receive an e-mail with the e-invoice attached as an HTML file. However, the invoice does not appear in my cloud invoice app (from the government).
How can I tell Chunghwa to issue me a “real” cloud invoice (i.e. tell them my “mobile phone barcode number”), so I don’t have to type in the invoice number manually and participate in the additional lottery drawing for cloud invoices?