Why isn't my search bar and add to cart button working properly?

[LongNguyen]

Hi everyone, yesterday I installed some search apps like Doofinder,etc but they don't support my demand so I uninstall. Now, I have an issue when I type querry in my search bar, it doesn't show up anything like it used to do before. Besides, I also have a problem when choosing the variant of a product and it shows the liquid code instead of Add To Cart. 

All my problems are described in my video. Could anyone give me solutions as I contacted with the Doofinder and they don't support free plan uninstalling their app 

[kaalTechGeeks]

Hi @LongNguyen, 
The primary reason for this thing maybe that there are some leftover codes from the app and to fix this bug you have to remove those scripts or snippets. 
If you are not able to recognize the script or snippets files then I will prefer you to roll down to the previous version of your theme.      
You can take help of the attached doc: https://help.shopify.com/en/manual/online-store/themes/theme-structure/extend/edit-theme-code#roll-b... 
still if you are not able to figure out then you can contact me or some other developer who can help you in fixing this. 
Thanks

[LongNguyen]

Hi there, thanks for your recommendation but I have tried to roll down to the old version but it's not successful cause I don't know what files are causing errors. Indeed, I've tried the theme.liquid,header and also the main-product.liquid (the recorded page). I need someone could help me

[kaalTechGeeks]

Hi @LongNguyen, 
Sure I could help you in fixing this issue, please let me know if you are ready to hire me to fix this bug for you. 
Thanks

[mmoreram]

I would recommend you to look for other options less code intrusive like Apisearch - https://apisearch.io. Good luck.