As gazelam pointed out, the windows to heaven are closed to you.
So, it would appear that people that struggle to put food on their table, clothes on their backs, and a roof over their head may not get into the celestial kingdom.
Au contraire… Paying an honest tithe is an act of faith. You seem to be overlooking miracles and divine guidance available to the faithful.
1 Kings 8-16 (KJV)
8 And the word of the Lord came unto him [Elijah], saying,
9 Arise, get thee to Zarephath, which belongeth to Zidon, and dwell there: behold, I have commanded a widow woman there to sustain thee.
10 So he arose and went to Zarephath. And when he came to the gate of the city, behold, the widow woman was there gathering of sticks: and he called to her, and said, Fetch me, I pray thee, a little water in a vessel, that I may drink.
11 And as she was going to fetch it, he called to her, and said, Bring me, I pray thee, a morsel of bread in thine hand.
12 And she said, As the Lord thy God liveth, I have not a cake, but an handful of meal in a barrel, and a little oil in a cruse: and, behold, I am gathering two sticks, that I may go in and dress it for me and my son, that we may eat it, and die.
13 And Elijah said unto her, Fear not; go and do as thou hast said: but make me thereof a little cake first, and bring it unto me, and after make for thee and for thy son.
14 For thus saith the Lord God of Israel,
The barrel of meal shall not waste, neither shall the cruse of oil fail, until the day that the Lord sendeth rain upon the earth.
15 And she went and did according to the saying of Elijah: and she, and he, and her house, did eat many days.
16
And the barrel of meal wasted not, neither did the cruse of oil fail, according to the word of the Lord, which he spake by Elijah.
And, of course, when Joseph was in Egypt, Pharaoh had the dream about the 7 years of plenty followed by the 7 years of famine and they were able to prepare accordingly.
I have read statements where mormon bishops have told members they need to keep paying their tithe in those cases.
I’ve read statements where people receiving from the bishop’s storehouse/warehouse (mormon equivilent of a food pantry) have to pay for what they receive.
LDS who fall on hard times are counseled to pay an honest tithing. There is also financial and food assistance available for them. Those receiving assistance are expected to give some sort of labor in return for the assistance to the best of their ability.