Intention when giving sadaqah

Q: 1. When giving Sadaqah should we make niyyah that I am giving this sadaqah for the good health of my children and family members? Or just the niyyah of sadaqah is sufficient in helping ease our difficulties?

2. If sadaqah is given with the niyyah of good health/protection of ones family, will one get the sawab too?

Denying Taqdeer

Q:

1. Is a person considered a Kafir if he or she does not believe in Taqdeer (Destiny)?

2. Can Dua change Taqdeer? Some scholars say that dua can change Taqdeer while others say dua cannot change Taqdeer. I am confused.

Consuming doubtful food

Q:

1. Is it true that all food is halaal until it can be proven haraam?

2. There were a few suspicious ingredients in something my mom bought that could've been haraam if processed through animals instead of plants. I chose to eat it since I didn't want to waste food or disrespect my mom by rejecting the food. Was it sinful for me to consume the doubtful food?

3. Does the hadith of not having my dua accepted for 40 days for consuming haraam food also apply here even if my dua is of repentance?

Working at massage centres

Q: I'm a Sri lankan living in Abu Dhabi, UAE. Due to some reasons I discontinued my job for last few weeks and now am jobless, but now I have got an opportunity to work at a massage center in the city with good payments and I don't know what kind of services do they provide and also I feel like it could be a prostitute center so is it ok to go and work with them? Sorry for my bad English hope you'll understand what am trying to say.

Merchant Cash Advance from Shopify

Q: I want to know about the Merchant Cash Advance from Shopify is halal or haram. Below are some details about the advance money they give, A merchant cash advance is a lump sum (called the amount received) that you receive from Shopify Capital in return for selling to Shopify Capital a set amount of your future sales revenue (called the total to remit). The amount received is deposited into your business bank account, and then a percentage of your daily sales is remitted to Shopify Capital until the total to remit has been completely remitted. For example, Shopify Capital might advance you $5,000 to purchase $5,650 of your future revenue, with a remittance rate of 10%. The $5,000 amount received would be delivered to your business bank account, and Shopify Capital would receive 10% of your daily sales revenue until the full $5,650 total to remit has been remitted. There is no deadline for remitting the total to remit to Shopify Capital. The daily remittance amount is determined by your store's daily sales, since the remittance rate is a percentage of your store's daily sales. The remittance amount is automatically debited from your business bank account. Shopify Capital is offering advance amounts between $5,000 and $50,000. The total to remit and remittance rate depend on your risk profile.