To comply with GDPR we will not store any personally identifiable information from you. Therefore we will serve sub-optimal experience where some features such as Login/Signup are disabled. However, you will be able to search and see all the properties, see agent contact details and contact them offline on your own.
Your question is rather unclear. There are many restrictions into purchase of HDB resale unit. What is your current situation? What scheme will you be using to purchase a unit? Are you Singaporean or PR? Single or Married?
There are many other factors that will determine if you are eligible to purchase a HDB unit.