Question: This spreadsheet I am working on tracks trainings. I'm having issues with this because one training counts for itself and fills the requirement for the other. I am trying to apply conditional formatting on column G that turns the cell red if the dates in;

* Column F and G are not within 3 years
* Column G are blank
* Column F = 0 and Column G are not within 3 years

Here is my best effort at the formula

```
=OR(AND(TODAY()-$F1>1095,TODAY()-$G1>1095),$G1=0,AND($F1=0,TODAY()-$G1>1095))

```

Answer: 
The domain `toastmasterstimer.tk` seems to be missing the Digital Asset Links file, necessary to validate ownership and enable fullscreen.

The file needs to be available at `https://toastmasterstimer.tk/.well-known/assetlinks.json`. 

You can use the [Statement List Generator and Tester](https://developers.google.com/digital-asset-links/tools/generator) to generate the `assetlinks.json` file.

This [section](https://developers.google.com/web/updates/2019/02/using-twa#link-site-to-app) of the documentation provides more information, including how to extract the SHA-256 fingerprint from your signing key.
Add this to your manifest before u port to android:

```
     "display": "standalone"

```