You can still get the indulgence of Divine Mercy, if you do ...

Again, don't worry. Either way, you will get promise and indulgence, forgiveness of sins and remission of all punishment.

Father Alar explains how. "Do these three things on the Sunday of Divine Mercy with the intention of turning away from sin in your life" -

Do an act of contrition.
Some parishes are able to make confession available, while others are not. If you cannot get to Confession, Father Alar stresses the Catechism of the Catholic Church (1451) states: “Contrition occupies the first place among the acts of the penitent. Contrition is "displeasure of the soul and detestation for the sin committed, together with the resolution not to sin again". In this way “you will be completely forgiven of all sins, even of mortal sins if it includes the firm resolution to have recourse to sacramental confession as soon as possible (Catechism, 1452). "

Make a spiritual communion.
Once again, with the churches not open, you cannot receive Communion. The answer? "Instead, make a spiritual communion," explains Father Alar, "by asking God to enter your heart as if you received it sacramentally: Body, Blood, Soul and Divinity." (See a prayer of spiritual communion below.)

He also made it clear that he was "carrying out this act of trust with the intention of returning to the sacrament of Holy Communion as soon as possible".

Pray this or a similar prayer:
"Lord Jesus Christ, you promised Saint Faustina that the soul who was at Confession [I am not able, but I did an act of contrition] and the soul that receives Holy Communion [I am not able, but I have made a Spirit of Communion] will receive complete forgiveness of all sins and punishments. Please, Lord Jesus Christ, give me this grace ”.

Similar for indulgence

Again, don't worry. Trust in Jesus. The official plenary indulgence of the Holy See with the approval of John Paul II also foresees that people cannot go to church or receive Communion on the Sunday of Divine Mercy.

First of all, keep in mind that these provisions do not remove the three conditions that must be met to receive the plenary indulgence, but we will see how they were elaborated. They are sacramental confession, Eucharistic communion and prayer for the intentions of the Supreme Pontiff (all "in a spirit that is completely detached from affection for a sin, even a venial sin).

Just as Father Alar observes, he performs that act of contrition and creates spiritual communion. Pray for the intentions of the Holy Father.

Here is the official explanation of the Holy See why, even if you are unable to go to church, you can get the plenary indulgence:

"For those who cannot go to church or the seriously ill" as and including "the countless brothers and sisters, that the disasters of war, political events, local violence and other similar causes have been driven out of their homeland; the sick and those who breastfeed them and all those who for just cause cannot leave their homes or who carry out an activity for the community that cannot be postponed, can obtain a plenary indulgence on the Sunday of Divine Mercy, if they totally detest any sin, as has been said previously and with the intention of satisfying the three usual conditions as soon as possible, will recite the Our Father and the Creed before a devout image of Our Merciful Lord Jesus and, moreover, I will pray a devout invocation to the Merciful Lord Jesus (eg Merciful Jesus, I trust in you). "