Question about the "Wiper" function! Urgent!

I use your ii and pay the not cheap tariff just because of the "eraser" feature. It was already not ideal, but I was content with what I had, but the latest update came out recently and even the little that I was satisfied with you have demolished, now on any images muddy blur, before at least partially the background was restored after the text, and now in general one mud, it seems I will have to stop paying you and look for another ii, where they will listen to my opinion and will not spoil this function. I asked to improve with light colors, and you have generally ruined even with dark colors. I can not work because of this!