Hello and welcome bryson,
if you bought a new Strida there should be warranty for the seat molding.
In that case you should contact your local dealer immediately, according to the Strida website for Singapore:
Mighty Velo Pte Ltd - formerly Diginexx
239 Lavender Street Singapore 338783
Tel: +65-63966280 Fax: +65 6396 6281
contact@mightyvelo.com
http://www.Mightyvelo.com
If your Strida was bought second hand you might ask for a spare part quote too.
You might also replace the old seat molding with the quick release seat molding ST-QRS-001.
As the seat molding is very important for your safety, I suggest you do not try to repair this part yourself
Do you have pics of the damage, please?
Kind regards,
BSA