Does a TDPB address mean I'm a tax resident of that country?
No. The address is a correspondence point. Tax residency is determined by where you actually live and the relevant national tests (physical presence, centre of vital interests, habitual abode, and similar). This is not legal or tax advice. Consult a qualified professional for your specific situation. For a related question about fiscal addresses, see Can I use a TDPB address as my official fiscal or tax address?.