A few days ago my A13 updated to Open UI 6. Since then my connectivity to my home WiFi keeps dropping out (multiple times a day). This means I lose WiFi calling which is essential for me as I have next to no mobile signal where I live. I now cannot make or receive calls reliably, use WhatsApp or browse the Internet without losing the connection multiple times. All these things were stable and reliable but are not since the update.  I am hugely  frustrated by this and it needs resolving quickly. Please advise. Thank you.