A few small tasks on yii2

Good afternoon, below is the list of tasks:
1. Make feeds in Yandex according to the new category. ( on the example of what has already been done )
2. set up an update on the crown of residues and new products - ( everything is already uploaded to the site, you only need an update on the article once a day and new products to fall into the main categories)
3. Make if the product is "not available" - then the status becomes "check with the manager" and leave the button in the card "buy in 1 click", which we rename to "Clarify"
4. Do not receive applications (not orders) to the mail, there are in the admin panels. Needs to be fixed.

From you experience on yii2 )