SSMSBoost intellisense not working? SSMS Version 17.9.1
It looks like the intellisense may not be working? Shouldn't it auto complete Select etc? Also, it looks like the intellisense is from SSMS itself (doesn't work that great)

I've checked the Intellisense setting and it's there just fine, also put the cache size on unlimited
Please, try to reset Intellisense Cache:
CTRL+SHFT+R

But Intellisense completes object names not sql statement like SELECT.