I got yellow leafs and brown flowers…

When you have yellow spots on one or more leafs it means that the anthurium gets too much sunlight. Try to place your plant a bit further away but still in a spot where daylight finds the plant.

When the new leafs stay lighter green it means that it is getting too little daylight and needs to be placed a bit more towards a lighter space. 

Old leafs that turn fully brown or yellow can be easily removed by pulling it out. The best part of that is that it provides you new leafs and flowers once you removed old leafs and flowers.