Translation of vorgestern

Hello, I am John, I'm 29 years old, I have lived in Heidelberg all my life, I have a son and I am working at Lenzemanner in the South of Germany since 1980. I look forward to hearing from you.
In plural there is no difference between the formal and the colloquial address form. Do you mean that you are using 3rd person singular form for the plural imperative? If so, I will change all entries so far.
Do not worry, please, all is well here. I find it fascinating how fast you can write texts in foreign languages. I know how hard it is, and I congratulate you. Waiting to your next email.