Why can't I not remove this kind of messages?

My LD41 game "The Fast Dating" is plagued by bad spam comments. @pov I want to have a way to remove and block this kind of comments. You can see the comments here, but I have removed links from them:

"Well, I never played this game but I visited here because I thought that this topic is about the dating. I come here and find another thing.But, I would like to tell you that if you are looking for an online dating website then I will suggest [I have removed link] website to you. You will be happy after using this."

"Good day everyone! I have great news for those who have been looking for a decent dating service for a long time! I found the site [I have removed link] from reviews on the Internet, it has a very excellent rating and it seems to me that each of us will definitely be able to meet there! Let’s try together!"

"I do not betray my girlfriend in real life. I have my own opinion about virtual life. What no one knows and there is no need to talk about betrayal. For online relationships that do not lead to consequences, I use the site [I have removed link] This is a very good way to have fun with girls from around the world. I’m mostly interested in one-night stands, but sometimes I like to watch live broadcasts of very seductive girls. In general, thanks to the Internet, I have a multifaceted relationship, and everything suits me."

"buying a wife from a website is one way to get a woman, but beware: this method drains the trust of the marriage. This is especially true if the man does not treat the woman as a member of his family. If you are serious about finding a wife through this method, then it is essential to discuss your options with your partner. Listed below are some tips on how to buy a wife online."

"Looking for Asian brides? Mail order Asian brides are a great way to find the right girl for you. These beautiful ladies are progressive thinkers, educated, and can run a home. They are also very attractive and a great choice for any man. However, you need to be careful when selecting the right Asian mail order bride. If you want to marry an asian brides, there are several things that you should consider."

"What is a mail order bride ? A mail order bride is a single woman who is seeking a marriage abroad with a specific intention. They do not want a hookup, a traditional marriage, or a relationship that may last for a short time. These women are looking for a long-term international commitment and may have children of their own. The sites that connect men and women have filters to narrow down the search."