There is no minimum to the amount that you can stake. But when you stake a very low amount, it will take a long time to generate a stake with the yearly return of 1%.
You can calculate yourself how long it will approximately take to generate a stake. Just do the math by replacing the 208000 coins in the example below with your own staking balance.
Here is an example with 208000 coins staking 24/7:
So in this example it will take approximately 65 days to get 1 stake. Staking is not linear, so the time can be shorter or longer. It averages out.
Your wallet is not fullly synched yet.
You cannot stake your coins because they are not fully mature yet.
This means that you will need to reinstall the eFIN DEX. Please make sure that your 24 word seed phrase and/or backup file is written down and safely stored before reinstalling.