Google Map with Marker Clustering URL link

[qbox4u]

Hy guy..
Thanks for the great example you made with the cluster map
I am trying to adapt your example in order to copy my own server web Google MAP application
to an smartphone interface
Unfortunately this is still hard for me and was wondering for the following:

I changed your example to an bottom navigation version as this is what i needed
inside my AsmL app ( is for prototyping, but available inside google lay store )

Unfortunately, i have the following issue's
1: i can't figure out, in what way we can activate the URL link
2: I need multiple vertical lines and Special Ascii characters in the info window, but \n and HTML does't work

if you have the time ( and will ) to get me in the right direction or are able to add this functionality into your demo , i would be very greatfull