activating license

[Daniel98 0]

i have been using eset mobile security on my phone (the username and password version). then i decided to uninstall it, after a while i decided to install it again but i can't use the previous license. how can i license it again? 

[celeron 0]

Get the original license.
Or use this link to convert your original license.

Convert username and password to license key

[MichalJ 434]

I am not completely sure what product you are talking about. If you are talking about a consumer mobile product, you have posted in a wrong forum section. If about the business one, you can convert username&password into license key (needed for the new one) at https://ela.eset.com/LicenseOwner/Converter. For home, you can do it here: https://my.eset.com/convert