Just now checked I too have Dev options enabled and on a custom rom. enabled dev options on wifes phone and no such issues with any bank apps.
Which's your phone?
I never got this logic! Why will banks give a lower credit card limits to a noob?
When I first applied for my first CC back in 2016, ICICI was offering 45k limit. When I asked for higher limits they said you better opt for some loans even personal loans will do or hold other banks CC.
I went for HDFC which gave me 1.38lacs.
After using it for few months, I reapplied for ICICI and they gave me 1.50L. Then future cards game was easy as while applying for any CC across banks, they automatically get to know your limits and you can even negotiate for a higher one.
I now have limits of 7-8lacs which I never asked for but automatically offered based on my spending pattern where 85% I use on online transactions and rest 15% on dine-outs, traveling etc. yet my yearly spends are not even 60k.
And ICICI and Axis are very much humble to offer credit limit increase at least once a year.