Binance api testnet

As I see, there is some changes added to testnet api.
E.g. I see that the amount of coins assigned to a user is changing. It was some constant value for btc/bnb/usdt before, what is kind a strange when someone want to test “get_symbol_ticker” and compare expected and got values.
Maybe would be better to add some coins with constant amounts and some with changing values?
I have some problem with “Filter failure: MAX_NUM_ALGO_ORDERS”.
I have created new API KEY for testnet (
First stop limit order returns this error. (after getting all open order the orders list is empty)
Is there any chance to get some information what is the problem?
Best Regards

Right now it’s working - the same code, without any changing. Strange for me.