Looks like the broker underjumps my ask price automatically

I don't trade crypto but I assume that it's no different than for stocks and options.

A Pegged-to-Primary order allows you to set a limit price you're willing to buy (or sell at) as well as an increment for adjusting your order until that limit price is reached.

For example, suppose the quote for XYZ is $100.00 x 100.25 and you're willing to pay up to $100.15 for it and you provide a one cent increment. You place an order to buy at $100.01 and every time someone raises the bid, your order will be increased by one cent so that you will be the best bid until price reaches $100.16, at which time your bid will no longer increase.

What sometimes happens with illiquid equities is that if I cancel my $100.15 order, the pegged order will drop back down to $100.00. If I bid $100.01, the process repeats. And sometimes, if I bid $100.00, the pegged order remains at $100.00 because of the price and time requirement of NBBO, I am behind the peg order so it has no need to increase.