Setting hreflang and x-default for a multilingual site may not be difficult, but there are some "hidden" use cases. See how I implemented this on my "not so typical" website.
A short post scriptum story to my Bing Jail post. The Bing Support responded, the blaclisting is confirmed and my site reappear then disappear again from search
Could you share some more information? You can send me an email with a screenshot. My site not serving any ads, does not use any shading tactics, pure HTML and CSS website with just a minimum of JavaScript.
This is why the position of Bing annoys me. Nobody checks the content and just assumes. Quidco is not a scam and my article describes how to get what you deserve. Quidco is nothing different to coupons for loyalty programs given to customers.
These are links to the article when I describe Quidco and Wise, additionally that you can get money back, like from GiffGaff in U/K you get £5, from Quidco £10 and so on. None of these described solutions is a scam. I always recommend something that I tried on my own and tested first. I am using Quidco and Wise constantly, hence if somebody classed my side as spam just based on these two promo links to the full article, they simply do not do their job and do not read the text that is behind them.
A short story on how my website lost all indexed pages in Bing, affecting my presence in DuckDuckGo, secret blacklisting and classification as a splog by Bing AI