Hadith on maintaining family ties

Q: It is reported in Sahih Muslim #2556 that "The severer would not enter Paradise". Ibn Umar said that Sufyan (explained it as): "One who severs the tie of kinship would not enter Paradise"

I would like to know 2 things from the above hadith:

1. Does the above hadith talk about blood relationship like your parents, siblings or does it include your relatives like cousins, uncles, etc.

2. Does the above mean a person will never enter paradise if he severs the tie of kinship?