Niotron applovin banner ads problem ?very small banner ads

Describe the bug in detail…

I,m using applovin 6 working good with niotron builder but in few days I notice that in my every app onely applovin native and banner ads size is very small ads and ads are 60% hinden for this reason ecpm is very very very low but interstial ads working good.
today i delete all the applovin blocks and Re implement it but facing same problem pleace help. Please fix this Aplovin banner issue .