WzPad doesn’t work anymore

Since 2 weeks now - WzPad doesn’t work.

instead of loading WhatsApp web it shows a screen that says that i need to upgrade chrome 49+.

i paid to remove ads in this app, for a while it was fine.

because it doesn’t work i got another app called: messaging for WhatsApp on iPad - paid again to remove ads - but its not as good as wzpad.

i have tried to talk to the developer - sent multiple emails - none answered - the website does not work it shows a generic domain selling website.

i did get an automatic message from the developer with FAQ - i replied to it several times and got nothing.

please advise.

iOS: latest

device: iPad Pro 11” with Smart Keyboard