First check the balance of your wallet address in one or two block explorers which are provided in the OP.
Contact your exchange and ask them what happens to your withdrawal.
Many exchanges have one or more confirmation requirement after withdrawal is placed.
Usually after you placed the withdrawal request, the exchange will sent to you a confirmation link by email and you need to click that and confirm.
Some need tol enter password after clicking the link to confirm. Some exchanges authenticate by email and sms or via google authenticator.
If you coins are send to a wrong block chain if its possible(I don't know that), you can get it back without any problem.
But above all make sure you used the correct wallet address for withdrawal.
I've checked on bitinfocharts.com and the coins are on my wallet address. So I think now I should take my wallet file from android to my computer and everything will be there?
How to return coins?
So, your are are not lost and they are all in your wallet itself.
Now, do one thing, delete all the files including blockchain and uninstall reddcoin qt wallet software.
These are in local settings folder and program folder.Before doing this you should backup your wallet.dat file.
Keep the wallet.dat on a safe place. I will recommend you to extract the private key also from qt and keep a back up of it in paper.
This will be helpful if the wallet.dat file is corrupted in any case.
Then, re-install the reddcoin software and sync. It will take some time.
Close reddcoin qt, restart your computer(there is a reason for this) Copy paste the old wallet.dat file.
Start Reddcoin Wallet Software, you will have your coins there.
If in any case the coins are not there and your are seeing it in transaction page, just close the wallet for some days and check again.
K I dpn't know if I explained it well - I have Android wallet, where should be my coins. When I open the wallet it shows "0", when I check this wallet on bitinfocharts.com they are on this wallet. My computer works on linux.
So I should remove everything rdd related from computer but firstly backup wallet.dat? In my case I think I should:
1. Take wallet.dat file from my phone to computer (and make additional backup)
2. Remove & install linux wallet
3. Wait till it synchronizes
4. Restart computer
5. Paste old wallet.dat to wallet folder
6. They should be visible, if not check the wallet after some time.
Am I correct? I want to do everything perfectly